667274172 has 48 divisors (see below), whose sum is σ = 1617044352. Its totient is φ = 213998400.

The previous prime is 667274171. The next prime is 667274197. The reversal of 667274172 is 271472766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667274171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24922 + ... + 44222.

It is an arithmetic number, because the mean of its divisors is an integer number (33688424).

Almost surely, 2^667274172 is an apocalyptic number.

It is an amenable number.

667274172 is an abundant number, since it is smaller than the sum of its proper divisors (949770180).

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

667274172 is a wasteful number, since it uses less digits than its factorization.

667274172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19418 (or 19416 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 667274172 is about 25831.6505860543. The cubic root of 667274172 is about 873.8457365713.

The spelling of 667274172 in words is "six hundred sixty-seven million, two hundred seventy-four thousand, one hundred seventy-two".