621364120 has 64 divisors (see below), whose sum is σ = 1520648640. Its totient is φ = 227136000.

The previous prime is 621364043. The next prime is 621364141. The reversal of 621364120 is 21463126.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 46605 + ... + 58435.

It is an arithmetic number, because the mean of its divisors is an integer number (23760135).

Almost surely, 2^621364120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621364120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760324320).

621364120 is an abundant number, since it is smaller than the sum of its proper divisors (899284520).

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

621364120 is a wasteful number, since it uses less digits than its factorization.

621364120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11956 (or 11952 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 621364120 is about 24927.1763342742. The cubic root of 621364120 is about 853.3268099816.

The spelling of 621364120 in words is "six hundred twenty-one million, three hundred sixty-four thousand, one hundred twenty".