666352944 has 60 divisors (see below), whose sum is σ = 1974567816. Its totient is φ = 209051136.

The previous prime is 666352919. The next prime is 666352991. The reversal of 666352944 is 449253666.

It is a self number, because there is not a number n which added to its sum of digits gives 666352944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133654 + ... + 138549.

Almost surely, 2^666352944 is an apocalyptic number.

It is an amenable number.

666352944 is an abundant number, since it is smaller than the sum of its proper divisors (1308214872).

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

666352944 is a wasteful number, since it uses less digits than its factorization.

666352944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272234 (or 272225 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 666352944 is about 25813.8130465067. The cubic root of 666352944 is about 873.4434122393.

The spelling of 666352944 in words is "six hundred sixty-six million, three hundred fifty-two thousand, nine hundred forty-four".