666600456 has 32 divisors (see below), whose sum is σ = 1669580640. Its totient is φ = 221789568.

The previous prime is 666600433. The next prime is 666600461. The reversal of 666600456 is 654006666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12261 + ... + 38516.

It is an arithmetic number, because the mean of its divisors is an integer number (52174395).

Almost surely, 2^666600456 is an apocalyptic number.

It is an amenable number.

666600456 is an abundant number, since it is smaller than the sum of its proper divisors (1002980184).

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

666600456 is a wasteful number, since it uses less digits than its factorization.

666600456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51333 (or 51329 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 666600456 is about 25818.6067788330. The cubic root of 666600456 is about 873.5515436064.

The spelling of 666600456 in words is "six hundred sixty-six million, six hundred thousand, four hundred fifty-six".