672521504 has 12 divisors (see below), whose sum is σ = 1324026774. Its totient is φ = 336260736.

The previous prime is 672521491. The next prime is 672521519. The reversal of 672521504 is 405125276.

It can be written as a sum of positive squares in only one way, i.e., 522213904 + 150307600 = 22852^2 + 12260^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 21016297 = 672521504 / (6 + 7 + 2 + 5 + 2 + 1 + 5 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10508117 + ... + 10508180.

Almost surely, 2^672521504 is an apocalyptic number.

It is an amenable number.

672521504 is a deficient number, since it is larger than the sum of its proper divisors (651505270).

672521504 is a wasteful number, since it uses less digits than its factorization.

672521504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21016307 (or 21016299 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 672521504 is about 25933.0195696529. The cubic root of 672521504 is about 876.1303504170.

The spelling of 672521504 in words is "six hundred seventy-two million, five hundred twenty-one thousand, five hundred four".