672649572 has 24 divisors (see below), whose sum is σ = 1793732416. Its totient is φ = 192185568.

The previous prime is 672649561. The next prime is 672649613. The reversal of 672649572 is 275946276.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003783 + ... + 4003950.

Almost surely, 2^672649572 is an apocalyptic number.

It is an amenable number.

672649572 is an abundant number, since it is smaller than the sum of its proper divisors (1121082844).

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

672649572 is a wasteful number, since it uses less digits than its factorization.

672649572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8007747 (or 8007745 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 672649572 is about 25935.4886593640. The cubic root of 672649572 is about 876.1859606042.

The spelling of 672649572 in words is "six hundred seventy-two million, six hundred forty-nine thousand, five hundred seventy-two".