655409056 has 12 divisors (see below), whose sum is σ = 1290336642. Its totient is φ = 327704512.

The previous prime is 655409033. The next prime is 655409129. The reversal of 655409056 is 650904556.

It can be written as a sum of positive squares in only one way, i.e., 528080400 + 127328656 = 22980^2 + 11284^2 .

It is a super-2 number, since 2×655409056² = 859122061373622272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10240735 + ... + 10240798.

Almost surely, 2^655409056 is an apocalyptic number.

It is an amenable number.

655409056 is a deficient number, since it is larger than the sum of its proper divisors (634927586).

655409056 is a wasteful number, since it uses less digits than its factorization.

655409056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20481543 (or 20481535 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 655409056 is about 25600.9581070709. The cubic root of 655409056 is about 868.6353096978.

The spelling of 655409056 in words is "six hundred fifty-five million, four hundred nine thousand, fifty-six".