672732672 has 40 divisors (see below), whose sum is σ = 1792205976. Its totient is φ = 224243712.

The previous prime is 672732661. The next prime is 672732673. The reversal of 672732672 is 276237276.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672732673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217453 + ... + 220524.

Almost surely, 2^672732672 is an apocalyptic number.

It is an amenable number.

672732672 is an abundant number, since it is smaller than the sum of its proper divisors (1119473304).

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

672732672 is an equidigital number, since it uses as much as digits as its factorization.

672732672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437998 (or 437982 counting only the distinct ones).

The product of its digits is 296352, while the sum is 42.

The square root of 672732672 is about 25937.0906618302. The cubic root of 672732672 is about 876.2220408348. Note that the first 3 decimals are identical.

The spelling of 672732672 in words is "six hundred seventy-two million, seven hundred thirty-two thousand, six hundred seventy-two".