671523504 has 20 divisors (see below), whose sum is σ = 1734769176. Its totient is φ = 223841152.

The previous prime is 671523491. The next prime is 671523521. The reversal of 671523504 is 405325176.

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, 6994989 + ... + 6995084.

Almost surely, 2^671523504 is an apocalyptic number.

It is an amenable number.

671523504 is an abundant number, since it is smaller than the sum of its proper divisors (1063245672).

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

671523504 is a wasteful number, since it uses less digits than its factorization.

671523504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13990084 (or 13990078 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 671523504 is about 25913.7705477223. The cubic root of 671523504 is about 875.6967529000.

The spelling of 671523504 in words is "six hundred seventy-one million, five hundred twenty-three thousand, five hundred four".