| Base | Representation |
|---|---|
| bin | 1000001000000… |
| … | …01000000000000 |
| 3 | 11202020222001100 |
| 4 | 10010001000000 |
| 5 | 114422132121 |
| 6 | 10432534400 |
| 7 | 1455235452 |
| oct | 404010000 |
| 9 | 152228040 |
| 10 | 68161536 |
| 11 | 35525853 |
| 12 | 1a9b1400 |
| 13 | 11176a91 |
| 14 | 90a42d2 |
| 15 | 5eb6026 |
| hex | 4101000 |
68161536 has 117 divisors (see below), whose sum is σ = 201572319. Its totient is φ = 22192128.
The previous prime is 68161507. The next prime is 68161543. The reversal of 68161536 is 63516186.
68161536 = 13 + 23 + ... + 1283.
It is a happy number.
The square root of 68161536 is 8256.
It is a perfect power (a square), and thus also a powerful number.
68161536 is a `hidden beast` number, since 6 + 8 + 1 + 615 + 36 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
Its product of digits (25920) is a multiple of the sum of its prime divisors (48).
It is a self number, because there is not a number n which added to its sum of digits gives 68161536.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (3) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1585131 + ... + 1585173.
Almost surely, 268161536 is an apocalyptic number.
68161536 is the 8256-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68161536
68161536 is an abundant number, since it is smaller than the sum of its proper divisors (133410783).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68161536 is an equidigital number, since it uses as much as digits as its factorization.
68161536 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 116 (or 48 counting only the distinct ones).
The product of its digits is 25920, while the sum is 36.
The cubic root of 68161536 is about 408.4884576609.
Multiplying 68161536 by its sum of digits (36), we get a square (2453815296 = 495362).
68161536 divided by its sum of digits (36) gives a square (1893376 = 13762).
It can be divided in two parts, 68 and 161536, that added together give a square (161604 = 4022).
The spelling of 68161536 in words is "sixty-eight million, one hundred sixty-one thousand, five hundred thirty-six".
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