Base | Representation |
---|---|
bin | 1000001010101… |
… | …00000110000111 |
3 | 11202220020221020 |
4 | 10011110012013 |
5 | 120014030040 |
6 | 10444122223 |
7 | 1461153660 |
oct | 405240607 |
9 | 152806836 |
10 | 68501895 |
11 | 35738540 |
12 | 1ab36373 |
13 | 11265987 |
14 | 9152367 |
15 | 6031cd0 |
hex | 4154187 |
68501895 has 64 divisors (see below), whose sum is σ = 138018816. Its totient is φ = 28183680.
The previous prime is 68501887. The next prime is 68501903. The reversal of 68501895 is 59810586.
It is an interprime number because it is at equal distance from previous prime (68501887) and next prime (68501903).
It is not a de Polignac number, because 68501895 - 23 = 68501887 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146452 + ... + 146918.
It is an arithmetic number, because the mean of its divisors is an integer number (2156544).
Almost surely, 268501895 is an apocalyptic number.
68501895 is an abundant number, since it is smaller than the sum of its proper divisors (69516921).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68501895 is a wasteful number, since it uses less digits than its factorization.
68501895 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 620.
The product of its (nonzero) digits is 86400, while the sum is 42.
The square root of 68501895 is about 8276.5871589684. The cubic root of 68501895 is about 409.1672468766.
It can be divided in two parts, 68501 and 895, that added together give a palindrome (69396).
The spelling of 68501895 in words is "sixty-eight million, five hundred one thousand, eight hundred ninety-five".
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