621055264 has 12 divisors (see below), whose sum is σ = 1222702614. Its totient is φ = 310527616.

The previous prime is 621055243. The next prime is 621055297. The reversal of 621055264 is 462550126.

It can be written as a sum of positive squares in only one way, i.e., 543262864 + 77792400 = 23308^2 + 8820^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9703957 + ... + 9704020.

Almost surely, 2^621055264 is an apocalyptic number.

It is an amenable number.

621055264 is a deficient number, since it is larger than the sum of its proper divisors (601647350).

621055264 is a wasteful number, since it uses less digits than its factorization.

621055264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19407987 (or 19407979 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 621055264 is about 24920.9803980502. The cubic root of 621055264 is about 853.1854013311.

The spelling of 621055264 in words is "six hundred twenty-one million, fifty-five thousand, two hundred sixty-four".