621663316 has 12 divisors (see below), whose sum is σ = 1088246880. Its totient is φ = 310735640.

The previous prime is 621663283. The next prime is 621663359. The reversal of 621663316 is 613366126.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 8296 + ... + 36223.

It is an arithmetic number, because the mean of its divisors is an integer number (90687240).

Almost surely, 2^621663316 is an apocalyptic number.

It is an amenable number.

621663316 is a deficient number, since it is larger than the sum of its proper divisors (466583564).

621663316 is a wasteful number, since it uses less digits than its factorization.

621663316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48014 (or 48012 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 621663316 is about 24933.1770137702. The cubic root of 621663316 is about 853.4637511578.

The spelling of 621663316 in words is "six hundred twenty-one million, six hundred sixty-three thousand, three hundred sixteen".