672735990 has 32 divisors (see below), whose sum is σ = 1618132320. Its totient is φ = 179000064.

The previous prime is 672735971. The next prime is 672736013. The reversal of 672735990 is 99537276.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10825 + ... + 38244.

It is an arithmetic number, because the mean of its divisors is an integer number (50566635).

Almost surely, 2^672735990 is an apocalyptic number.

672735990 is an abundant number, since it is smaller than the sum of its proper divisors (945396330).

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

672735990 is a wasteful number, since it uses less digits than its factorization.

672735990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49536.

The product of its (nonzero) digits is 714420, while the sum is 48.

The square root of 672735990 is about 25937.1546242066. The cubic root of 672735990 is about 876.2234813773.

The spelling of 672735990 in words is "six hundred seventy-two million, seven hundred thirty-five thousand, nine hundred ninety".