621248912 has 10 divisors (see below), whose sum is σ = 1203669798. Its totient is φ = 310624448.

The previous prime is 621248899. The next prime is 621248921. The reversal of 621248912 is 219842126.

It can be written as a sum of positive squares in only one way, i.e., 553943296 + 67305616 = 23536^2 + 8204^2 .

It is a super-2 number, since 2×621248912² = 771900421322367488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19414013 + ... + 19414044.

Almost surely, 2^621248912 is an apocalyptic number.

It is an amenable number.

621248912 is a deficient number, since it is larger than the sum of its proper divisors (582420886).

621248912 is a wasteful number, since it uses less digits than its factorization.

621248912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38828065 (or 38828059 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 621248912 is about 24924.8653356442. The cubic root of 621248912 is about 853.2740678784.

The spelling of 621248912 in words is "six hundred twenty-one million, two hundred forty-eight thousand, nine hundred twelve".