624252666 has 16 divisors (see below), whose sum is σ = 1291557600. Its totient is φ = 200908848.

The previous prime is 624252623. The next prime is 624252679. The reversal of 624252666 is 666252426.

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 7 ways as a sum of consecutive naturals, for example, 1793656 + ... + 1794003.

It is an arithmetic number, because the mean of its divisors is an integer number (80722350).

Almost surely, 2^624252666 is an apocalyptic number.

624252666 is an abundant number, since it is smaller than the sum of its proper divisors (667304934).

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

624252666 is a wasteful number, since it uses less digits than its factorization.

624252666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587693.

The product of its digits is 207360, while the sum is 39.

The square root of 624252666 is about 24985.0488492618. The cubic root of 624252666 is about 854.6470579104.

The spelling of 624252666 in words is "six hundred twenty-four million, two hundred fifty-two thousand, six hundred sixty-six".