657376972 has 48 divisors (see below), whose sum is σ = 1402992640. Its totient is φ = 263233152.

The previous prime is 657376969. The next prime is 657377027. The reversal of 657376972 is 279673756.

It is a happy number.

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, 30373 + ... + 47299.

Almost surely, 2^657376972 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 657376972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701496320).

657376972 is an abundant number, since it is smaller than the sum of its proper divisors (745615668).

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

657376972 is a wasteful number, since it uses less digits than its factorization.

657376972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17030 (or 17028 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 52.

The square root of 657376972 is about 25639.3637206542. The cubic root of 657376972 is about 869.5038224162.

The spelling of 657376972 in words is "six hundred fifty-seven million, three hundred seventy-six thousand, nine hundred seventy-two".