672991004 has 24 divisors (see below), whose sum is σ = 1346714208. Its totient is φ = 288267840.

The previous prime is 672990973. The next prime is 672991013. The reversal of 672991004 is 400199276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56534 + ... + 67394.

It is an arithmetic number, because the mean of its divisors is an integer number (56113092).

Almost surely, 2^672991004 is an apocalyptic number.

It is an amenable number.

672991004 is an abundant number, since it is smaller than the sum of its proper divisors (673723204).

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

672991004 is a wasteful number, since it uses less digits than its factorization.

672991004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13085 (or 13083 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 672991004 is about 25942.0701564081. The cubic root of 672991004 is about 876.3341840551.

The spelling of 672991004 in words is "six hundred seventy-two million, nine hundred ninety-one thousand, four".