671972568 has 32 divisors (see below), whose sum is σ = 1680568560. Its totient is φ = 223905920.

The previous prime is 671972557. The next prime is 671972569. The reversal of 671972568 is 865279176.

It is a self number, because there is not a number n which added to its sum of digits gives 671972568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671972569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114178 + ... + 119918.

Almost surely, 2^671972568 is an apocalyptic number.

It is an amenable number.

671972568 is an abundant number, since it is smaller than the sum of its proper divisors (1008595992).

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

671972568 is a wasteful number, since it uses less digits than its factorization.

671972568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10627 (or 10623 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The square root of 671972568 is about 25922.4336820446. The cubic root of 671972568 is about 875.8919092669.

The spelling of 671972568 in words is "six hundred seventy-one million, nine hundred seventy-two thousand, five hundred sixty-eight".