655864256 has 14 divisors (see below), whose sum is σ = 1301480760. Its totient is φ = 327932096.

The previous prime is 655864243. The next prime is 655864259. The reversal of 655864256 is 652468556.

It is a self number, because there is not a number n which added to its sum of digits gives 655864256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655864259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5123876 + ... + 5124003.

Almost surely, 2^655864256 is an apocalyptic number.

It is an amenable number.

655864256 is a deficient number, since it is larger than the sum of its proper divisors (645616504).

655864256 is a wasteful number, since it uses less digits than its factorization.

655864256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10247891 (or 10247881 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 47.

The square root of 655864256 is about 25609.8468562387. The cubic root of 655864256 is about 868.8363603674.

The spelling of 655864256 in words is "six hundred fifty-five million, eight hundred sixty-four thousand, two hundred fifty-six".