621126256 has 20 divisors (see below), whose sum is σ = 1215119152. Its totient is φ = 307547136.

The previous prime is 621126223. The next prime is 621126257. The reversal of 621126256 is 652621126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621126257) 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, 186801 + ... + 190096.

Almost surely, 2^621126256 is an apocalyptic number.

It is an amenable number.

621126256 is a deficient number, since it is larger than the sum of its proper divisors (593992896).

621126256 is a wasteful number, since it uses less digits than its factorization.

621126256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377008 (or 377002 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 621126256 is about 24922.4046993865. The cubic root of 621126256 is about 853.2179089215.

The spelling of 621126256 in words is "six hundred twenty-one million, one hundred twenty-six thousand, two hundred fifty-six".