667940060176 has 15 divisors (see below), whose sum is σ = 1294140200511. Its totient is φ = 333968395536.

The previous prime is 667940060087. The next prime is 667940060189. The reversal of 667940060176 is 671060049766.

The square root of 667940060176 is 817276.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×667940060176² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3166945 + ... + 3371263.

Almost surely, 2^667940060176 is an apocalyptic number.

667940060176 is the 817276-th square number.

It is an amenable number.

667940060176 is a deficient number, since it is larger than the sum of its proper divisors (626200140335).

667940060176 is an frugal number, since it uses more digits than its factorization.

667940060176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408646 (or 204321 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 667940060176 in words is "six hundred sixty-seven billion, nine hundred forty million, sixty thousand, one hundred seventy-six".