621310768 has 20 divisors (see below), whose sum is σ = 1296389248. Its totient is φ = 286758720.

The previous prime is 621310763. The next prime is 621310777. The reversal of 621310768 is 867013126.

It is not an unprimeable number, because it can be changed into a prime (621310763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493328 + ... + 1493743.

Almost surely, 2^621310768 is an apocalyptic number.

It is an amenable number.

621310768 is an abundant number, since it is smaller than the sum of its proper divisors (675078480).

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

621310768 is a wasteful number, since it uses less digits than its factorization.

621310768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987092 (or 2987086 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 621310768 is about 24926.1061539904. The cubic root of 621310768 is about 853.3023863017.

The spelling of 621310768 in words is "six hundred twenty-one million, three hundred ten thousand, seven hundred sixty-eight".