666668010 has 32 divisors (see below), whose sum is σ = 1684215360. Its totient is φ = 168421248.

The previous prime is 666668003. The next prime is 666668027. The reversal of 666668010 is 10866666.

It is a self number, because there is not a number n which added to its sum of digits gives 666668010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584227 + ... + 585366.

It is an arithmetic number, because the mean of its divisors is an integer number (52631730).

Almost surely, 2^666668010 is an apocalyptic number.

666668010 is an abundant number, since it is smaller than the sum of its proper divisors (1017547350).

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

666668010 is a wasteful number, since it uses less digits than its factorization.

666668010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169622.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 666668010 is about 25819.9149882412. The cubic root of 666668010 is about 873.5810514908.

The spelling of 666668010 in words is "six hundred sixty-six million, six hundred sixty-eight thousand, ten".