655626556 has 36 divisors (see below), whose sum is σ = 1312592008. Its totient is φ = 284790528.

The previous prime is 655626553. The next prime is 655626563.

655626556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655626556² = 859692361864842272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655626551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6786 + ... + 36841.

Almost surely, 2^655626556 is an apocalyptic number.

It is an amenable number.

655626556 is an abundant number, since it is smaller than the sum of its proper divisors (656965452).

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

655626556 is a wasteful number, since it uses less digits than its factorization.

655626556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43678 (or 43659 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 46.

The square root of 655626556 is about 25605.2056426032. The cubic root of 655626556 is about 868.7313857199.

The spelling of 655626556 in words is "six hundred fifty-five million, six hundred twenty-six thousand, five hundred fifty-six".