666466700 has 18 divisors (see below), whose sum is σ = 1446232956. Its totient is φ = 266586640.

The previous prime is 666466687. The next prime is 666466711. The reversal of 666466700 is 7664666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3332234 + ... + 3332433.

Almost surely, 2^666466700 is an apocalyptic number.

It is an amenable number.

666466700 is an abundant number, since it is smaller than the sum of its proper divisors (779766256).

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

666466700 is a wasteful number, since it uses less digits than its factorization.

666466700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664681 (or 6664674 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 666466700 is about 25816.0163464466. The cubic root of 666466700 is about 873.4931125152.

The spelling of 666466700 in words is "six hundred sixty-six million, four hundred sixty-six thousand, seven hundred".