666712934 has 8 divisors (see below), whose sum is σ = 1009416168. Its totient is φ = 330240880.

The previous prime is 666712909. The next prime is 666712993. The reversal of 666712934 is 439217666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×666712934² = 889012272725776712, 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557527 + ... + 1557954.

It is an arithmetic number, because the mean of its divisors is an integer number (126177021).

Almost surely, 2^666712934 is an apocalyptic number.

666712934 is a deficient number, since it is larger than the sum of its proper divisors (342703234).

666712934 is a wasteful number, since it uses less digits than its factorization.

666712934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115590.

The product of its digits is 326592, while the sum is 44.

The square root of 666712934 is about 25820.7849222288. The cubic root of 666712934 is about 873.6006733881.

The spelling of 666712934 in words is "six hundred sixty-six million, seven hundred twelve thousand, nine hundred thirty-four".