Base | Representation |
---|---|
bin | 100111011101000… |
… | …100000000000000 |
3 | 1201010112112020100 |
4 | 213131010000000 |
5 | 2323423224414 |
6 | 145403242400 |
7 | 22255212012 |
oct | 4735040000 |
9 | 1633475210 |
10 | 661929984 |
11 | 30a707881 |
12 | 165819400 |
13 | a71a0161 |
14 | 63ca81b2 |
15 | 3d1a2609 |
hex | 27744000 |
661929984 has 135 divisors (see below), whose sum is σ = 1941149847. Its totient is φ = 217350144.
The previous prime is 661929929. The next prime is 661929991. The reversal of 661929984 is 489929166.
The square root of 661929984 is 25728.
It is a perfect power (a square), and thus also a powerful number.
It is a nude number because it is divisible by every one of its digits.
Its product of digits (1679616) is a multiple of the sum of its prime divisors (72).
It is a self number, because there is not a number n which added to its sum of digits gives 661929984.
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9879519 + ... + 9879585.
Almost surely, 2661929984 is an apocalyptic number.
661929984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.
661929984 is the 25728-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 661929984
661929984 is an abundant number, since it is smaller than the sum of its proper divisors (1279219863).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
661929984 is an frugal number, since it uses more digits than its factorization.
661929984 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 168 (or 72 counting only the distinct ones).
The product of its digits is 1679616, while the sum is 54.
The cubic root of 661929984 is about 871.5066086320.
It can be divided in two parts, 66192 and 9984, that added together give a square (76176 = 2762).
The spelling of 661929984 in words is "six hundred sixty-one million, nine hundred twenty-nine thousand, nine hundred eighty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.029 sec. • engine limits •