666464676 has 24 divisors (see below), whose sum is σ = 1593014304. Its totient is φ = 216736320.

The previous prime is 666464657. The next prime is 666464707. The reversal of 666464676 is 676464666.

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, 676810 + ... + 677793.

It is an arithmetic number, because the mean of its divisors is an integer number (66375596).

Almost surely, 2^666464676 is an apocalyptic number.

It is an amenable number.

666464676 is an abundant number, since it is smaller than the sum of its proper divisors (926549628).

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

666464676 is a wasteful number, since it uses less digits than its factorization.

666464676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354651 (or 1354649 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 51.

The square root of 666464676 is about 25815.9771459459. The cubic root of 666464676 is about 873.4922282740.

The spelling of 666464676 in words is "six hundred sixty-six million, four hundred sixty-four thousand, six hundred seventy-six".