655615056 has 20 divisors (see below), whose sum is σ = 1693672352. Its totient is φ = 218538336.

The previous prime is 655615031. The next prime is 655615061. The reversal of 655615056 is 650516556.

It is a super-2 number, since 2×655615056² = 859662203307766272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6829276 + ... + 6829371.

Almost surely, 2^655615056 is an apocalyptic number.

It is an amenable number.

655615056 is an abundant number, since it is smaller than the sum of its proper divisors (1038057296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655615056 is a wasteful number, since it uses less digits than its factorization.

655615056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13658658 (or 13658652 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 655615056 is about 25604.9810779075. The cubic root of 655615056 is about 868.7263063703.

It can be divided in two parts, 6556 and 15056, that added together give a palindrome (21612).

The spelling of 655615056 in words is "six hundred fifty-five million, six hundred fifteen thousand, fifty-six".