672308544 has 28 divisors (see below), whose sum is σ = 1778816864. Its totient is φ = 224102784.

The previous prime is 672308531. The next prime is 672308573. The reversal of 672308544 is 445803276.

It is a happy number.

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, 1750612 + ... + 1750995.

Almost surely, 2^672308544 is an apocalyptic number.

672308544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

672308544 is an abundant number, since it is smaller than the sum of its proper divisors (1106508320).

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

672308544 is a wasteful number, since it uses less digits than its factorization.

672308544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501622 (or 3501612 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 672308544 is about 25928.9132822801. The cubic root of 672308544 is about 876.0378624614.

The spelling of 672308544 in words is "six hundred seventy-two million, three hundred eight thousand, five hundred forty-four".