621794320 has 60 divisors (see below), whose sum is σ = 1681710444. Its totient is φ = 213185280.

The previous prime is 621794297. The next prime is 621794339. The reversal of 621794320 is 23497126.

It can be written as a sum of positive squares in 2 ways, for example, as 115004176 + 506790144 = 10724^2 + 22512^2 .

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, 75391 + ... + 83230.

Almost surely, 2^621794320 is an apocalyptic number.

It is an amenable number.

621794320 is an abundant number, since it is smaller than the sum of its proper divisors (1059916124).

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

621794320 is a wasteful number, since it uses less digits than its factorization.

621794320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158648 (or 158635 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 621794320 is about 24935.8039774137. The cubic root of 621794320 is about 853.5236974929.

The spelling of 621794320 in words is "six hundred twenty-one million, seven hundred ninety-four thousand, three hundred twenty".