655472256 has 128 divisors (see below), whose sum is σ = 1796424000. Its totient is φ = 211673088.

The previous prime is 655472249. The next prime is 655472269. The reversal of 655472256 is 652274556.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877970 + ... + 1878318.

Almost surely, 2^655472256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655472256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898212000).

655472256 is an abundant number, since it is smaller than the sum of its proper divisors (1140951744).

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

655472256 is a wasteful number, since it uses less digits than its factorization.

655472256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 494 counting only the distinct ones).

The product of its digits is 504000, while the sum is 42.

The square root of 655472256 is about 25602.1924061202. The cubic root of 655472256 is about 868.6632291508.

The spelling of 655472256 in words is "six hundred fifty-five million, four hundred seventy-two thousand, two hundred fifty-six".