666674044 has 24 divisors (see below), whose sum is σ = 1224236160. Its totient is φ = 317055024.

The previous prime is 666674039. The next prime is 666674059. The reversal of 666674044 is 440476666.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3774 + ... + 36709.

It is an arithmetic number, because the mean of its divisors is an integer number (51009840).

Almost surely, 2^666674044 is an apocalyptic number.

It is an amenable number.

666674044 is a deficient number, since it is larger than the sum of its proper divisors (557562116).

666674044 is a wasteful number, since it uses less digits than its factorization.

666674044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40689 (or 40687 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The square root of 666674044 is about 25820.0318357666. The cubic root of 666674044 is about 873.5836870716.

The spelling of 666674044 in words is "six hundred sixty-six million, six hundred seventy-four thousand, forty-four".