621620982 has 24 divisors (see below), whose sum is σ = 1347353280. Its totient is φ = 207128880.

The previous prime is 621620969. The next prime is 621620999. The reversal of 621620982 is 289026126.

It is a happy number.

621620982 is a `hidden beast` number, since 6 + 21 + 620 + 9 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62107 + ... + 71417.

It is an arithmetic number, because the mean of its divisors is an integer number (56139720).

Almost surely, 2^621620982 is an apocalyptic number.

621620982 is an abundant number, since it is smaller than the sum of its proper divisors (725732298).

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

621620982 is a wasteful number, since it uses less digits than its factorization.

621620982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13028 (or 13025 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 621620982 is about 24932.3280501441. The cubic root of 621620982 is about 853.4443776729. Note that the first 3 decimals are identical.

The spelling of 621620982 in words is "six hundred twenty-one million, six hundred twenty thousand, nine hundred eighty-two".