621579882 has 64 divisors (see below), whose sum is σ = 1554499584. Its totient is φ = 160971840.

The previous prime is 621579863. The next prime is 621579887. The reversal of 621579882 is 288975126.

It is not an unprimeable number, because it can be changed into a prime (621579887) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 170523 + ... + 174129.

It is an arithmetic number, because the mean of its divisors is an integer number (24289056).

Almost surely, 2^621579882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621579882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777249792).

621579882 is an abundant number, since it is smaller than the sum of its proper divisors (932919702).

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

621579882 is a wasteful number, since it uses less digits than its factorization.

621579882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003.

The product of its digits is 483840, while the sum is 48.

The square root of 621579882 is about 24931.5038054266. The cubic root of 621579882 is about 853.4255680670.

It can be divided in two parts, 621 and 579882, that added together give a triangular number (580503 = T₁₀₇₇).

The spelling of 621579882 in words is "six hundred twenty-one million, five hundred seventy-nine thousand, eight hundred eighty-two".