621029982 has 8 divisors (see below), whose sum is σ = 1242059976. Its totient is φ = 207009992.

The previous prime is 621029977. The next prime is 621030001. The reversal of 621029982 is 289920126.

It is a sphenic number, since it is the product of 3 distinct primes.

621029982 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 621029982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51752493 + ... + 51752504.

It is an arithmetic number, because the mean of its divisors is an integer number (155257497).

Almost surely, 2^621029982 is an apocalyptic number.

621029982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

621029982 is a wasteful number, since it uses less digits than its factorization.

621029982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103505002.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 621029982 is about 24920.4731496013. The cubic root of 621029982 is about 853.1738239792.

The spelling of 621029982 in words is "six hundred twenty-one million, twenty-nine thousand, nine hundred eighty-two".