667732272 has 40 divisors (see below), whose sum is σ = 1726251120. Its totient is φ = 222412800.

The previous prime is 667732259. The next prime is 667732309. The reversal of 667732272 is 272237766.

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, 72504 + ... + 81192.

It is an arithmetic number, because the mean of its divisors is an integer number (43156278).

Almost surely, 2^667732272 is an apocalyptic number.

It is an amenable number.

667732272 is an abundant number, since it is smaller than the sum of its proper divisors (1058518848).

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

667732272 is a wasteful number, since it uses less digits than its factorization.

667732272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10301 (or 10295 counting only the distinct ones).

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

The square root of 667732272 is about 25840.5160939173. The cubic root of 667732272 is about 874.0456629666.

The spelling of 667732272 in words is "six hundred sixty-seven million, seven hundred thirty-two thousand, two hundred seventy-two".