621605852 has 24 divisors (see below), whose sum is σ = 1260725760. Its totient is φ = 262649520.

The previous prime is 621605851. The next prime is 621605857. The reversal of 621605852 is 258506126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621605851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154352 + ... + 158327.

It is an arithmetic number, because the mean of its divisors is an integer number (52530240).

Almost surely, 2^621605852 is an apocalyptic number.

It is an amenable number.

621605852 is an abundant number, since it is smaller than the sum of its proper divisors (639119908).

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

621605852 is a wasteful number, since it uses less digits than its factorization.

621605852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312761 (or 312759 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 621605852 is about 24932.0246269732. The cubic root of 621605852 is about 853.4374534546.

The spelling of 621605852 in words is "six hundred twenty-one million, six hundred five thousand, eight hundred fifty-two".