667045312 has 28 divisors (see below), whose sum is σ = 1393337320. Its totient is φ = 315968256.

The previous prime is 667045307. The next prime is 667045363. The reversal of 667045312 is 213540766.

It is a happy number.

It is a super-2 number, since 2×667045312² = 889898896522354688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273063 + ... + 275494.

Almost surely, 2^667045312 is an apocalyptic number.

It is an amenable number.

667045312 is an abundant number, since it is smaller than the sum of its proper divisors (726292008).

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

667045312 is a wasteful number, since it uses less digits than its factorization.

667045312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548588 (or 548578 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 667045312 is about 25827.2203692151. The cubic root of 667045312 is about 873.7458220175.

The spelling of 667045312 in words is "six hundred sixty-seven million, forty-five thousand, three hundred twelve".