623304666 has 16 divisors (see below), whose sum is σ = 1385121600. Its totient is φ = 207768204.

The previous prime is 623304599. The next prime is 623304679. The reversal of 623304666 is 666403326.

It is a self number, because there is not a number n which added to its sum of digits gives 623304666.

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, 5771286 + ... + 5771393.

It is an arithmetic number, because the mean of its divisors is an integer number (86570100).

Almost surely, 2^623304666 is an apocalyptic number.

623304666 is an abundant number, since it is smaller than the sum of its proper divisors (761816934).

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

623304666 is a wasteful number, since it uses less digits than its factorization.

623304666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542690 (or 11542684 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 623304666 is about 24966.0702955031. The cubic root of 623304666 is about 854.2142118681.

The spelling of 623304666 in words is "six hundred twenty-three million, three hundred four thousand, six hundred sixty-six".