666976364 has 12 divisors (see below), whose sum is σ = 1169589288. Its totient is φ = 332808000.

The previous prime is 666976363. The next prime is 666976367. The reversal of 666976364 is 463679666.

It is not an unprimeable number, because it can be changed into a prime (666976363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167837 + ... + 171764.

It is an arithmetic number, because the mean of its divisors is an integer number (97465774).

Almost surely, 2^666976364 is an apocalyptic number.

It is an amenable number.

666976364 is a deficient number, since it is larger than the sum of its proper divisors (502612924).

666976364 is a wasteful number, since it uses less digits than its factorization.

666976364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340096 (or 340094 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 53.

The square root of 666976364 is about 25825.8855414485. The cubic root of 666976364 is about 873.7157165651.

The spelling of 666976364 in words is "six hundred sixty-six million, nine hundred seventy-six thousand, three hundred sixty-four".