667514660 has 12 divisors (see below), whose sum is σ = 1401780828. Its totient is φ = 267005856.

The previous prime is 667514629. The next prime is 667514689. The reversal of 667514660 is 66415766.

It can be written as a sum of positive squares in 2 ways, for example, as 295564864 + 371949796 = 17192^2 + 19286^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16687847 + ... + 16687886.

It is an arithmetic number, because the mean of its divisors is an integer number (116815069).

Almost surely, 2^667514660 is an apocalyptic number.

It is an amenable number.

667514660 is an abundant number, since it is smaller than the sum of its proper divisors (734266168).

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

667514660 is a wasteful number, since it uses less digits than its factorization.

667514660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33375742 (or 33375740 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 667514660 is about 25836.3050763843. The cubic root of 667514660 is about 873.9507030060.

The spelling of 667514660 in words is "six hundred sixty-seven million, five hundred fourteen thousand, six hundred sixty".