655255564 has 12 divisors (see below), whose sum is σ = 1158519544. Its totient is φ = 324249984.

The previous prime is 655255553. The next prime is 655255577. The reversal of 655255564 is 465552556.

It is a self number, because there is not a number n which added to its sum of digits gives 655255564.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844014 + ... + 844789.

Almost surely, 2^655255564 is an apocalyptic number.

It is an amenable number.

655255564 is a deficient number, since it is larger than the sum of its proper divisors (503263980).

655255564 is a wasteful number, since it uses less digits than its factorization.

655255564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688904 (or 1688902 counting only the distinct ones).

The product of its digits is 900000, while the sum is 43.

The square root of 655255564 is about 25597.9601531060. The cubic root of 655255564 is about 868.5674950614.

The spelling of 655255564 in words is "six hundred fifty-five million, two hundred fifty-five thousand, five hundred sixty-four".