655396056 has 128 divisors (see below), whose sum is σ = 2152512000. Its totient is φ = 180786816.

The previous prime is 655396043. The next prime is 655396069. The reversal of 655396056 is 650693556.

655396056 is a `hidden beast` number, since 6 + 5 + 5 + 39 + 605 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (655396043) and next prime (655396069).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36375 + ... + 51321.

It is an arithmetic number, because the mean of its divisors is an integer number (16816500).

Almost surely, 2^655396056 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 655396056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076256000).

655396056 is an abundant number, since it is smaller than the sum of its proper divisors (1497115944).

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

655396056 is a wasteful number, since it uses less digits than its factorization.

655396056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14998 (or 14988 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 45.

The square root of 655396056 is about 25600.7042090642. The cubic root of 655396056 is about 868.6295665498.

The spelling of 655396056 in words is "six hundred fifty-five million, three hundred ninety-six thousand, fifty-six".