667455272 has 32 divisors (see below), whose sum is σ = 1394305920. Its totient is φ = 296931840.

The previous prime is 667455251. The next prime is 667455307. The reversal of 667455272 is 272554766.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 76553 + ... + 84824.

It is an arithmetic number, because the mean of its divisors is an integer number (43572060).

Almost surely, 2^667455272 is an apocalyptic number.

It is an amenable number.

667455272 is an abundant number, since it is smaller than the sum of its proper divisors (726850648).

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

667455272 is a wasteful number, since it uses less digits than its factorization.

667455272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161441 (or 161437 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The square root of 667455272 is about 25835.1557378701. The cubic root of 667455272 is about 873.9247841127.

The spelling of 667455272 in words is "six hundred sixty-seven million, four hundred fifty-five thousand, two hundred seventy-two".