621941650 has 24 divisors (see below), whose sum is σ = 1261977264. Its totient is φ = 226160400.

The previous prime is 621941603. The next prime is 621941657. The reversal of 621941650 is 56149126.

It is a super-2 number, since 2×621941650² = 773622832009445000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (621941657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564852 + ... + 565951.

It is an arithmetic number, because the mean of its divisors is an integer number (52582386).

Almost surely, 2^621941650 is an apocalyptic number.

621941650 is an abundant number, since it is smaller than the sum of its proper divisors (640035614).

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

621941650 is a wasteful number, since it uses less digits than its factorization.

621941650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130826 (or 1130821 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 621941650 is about 24938.7579883201. The cubic root of 621941650 is about 853.5911044107.

The spelling of 621941650 in words is "six hundred twenty-one million, nine hundred forty-one thousand, six hundred fifty".