672445460 has 12 divisors (see below), whose sum is σ = 1412135508. Its totient is φ = 268978176.

The previous prime is 672445453. The next prime is 672445483. The reversal of 672445460 is 64544276.

It can be written as a sum of positive squares in 2 ways, for example, as 264647824 + 407797636 = 16268^2 + 20194^2 .

It is a super-2 number, since 2×672445460² = 904365793349223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16811117 + ... + 16811156.

It is an arithmetic number, because the mean of its divisors is an integer number (117677959).

Almost surely, 2^672445460 is an apocalyptic number.

It is an amenable number.

672445460 is an abundant number, since it is smaller than the sum of its proper divisors (739690048).

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

672445460 is a wasteful number, since it uses less digits than its factorization.

672445460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33622282 (or 33622280 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The square root of 672445460 is about 25931.5533665070. The cubic root of 672445460 is about 876.0973269537.

The spelling of 672445460 in words is "six hundred seventy-two million, four hundred forty-five thousand, four hundred sixty".