621790352 has 20 divisors (see below), whose sum is σ = 1268125680. Its totient is φ = 294532128.

The previous prime is 621790327. The next prime is 621790361. The reversal of 621790352 is 253097126.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 1022378 + ... + 1022985.

It is an arithmetic number, because the mean of its divisors is an integer number (63406284).

Almost surely, 2^621790352 is an apocalyptic number.

It is an amenable number.

621790352 is an abundant number, since it is smaller than the sum of its proper divisors (646335328).

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

621790352 is a wasteful number, since it uses less digits than its factorization.

621790352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045390 (or 2045384 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 621790352 is about 24935.7244129783. The cubic root of 621790352 is about 853.5218818930.

It can be divided in two parts, 6217 and 90352, that added together give a palindrome (96569).

The spelling of 621790352 in words is "six hundred twenty-one million, seven hundred ninety thousand, three hundred fifty-two".