621485325630 has 384 divisors, whose sum is σ = 1864332288000. Its totient is φ = 142472494080.

The previous prime is 621485325619. The next prime is 621485325649. The reversal of 621485325630 is 36523584126.

621485325630 is a `hidden beast` number, since 6 + 2 + 1 + 4 + 8 + 5 + 3 + 2 + 5 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 398642791 + ... + 398644349.

It is an arithmetic number, because the mean of its divisors is an integer number (4855032000).

Almost surely, 2^621485325630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621485325630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932166144000).

621485325630 is an abundant number, since it is smaller than the sum of its proper divisors (1242846962370).

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

621485325630 is a wasteful number, since it uses less digits than its factorization.

621485325630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 621485325630 in words is "six hundred twenty-one billion, four hundred eighty-five million, three hundred twenty-five thousand, six hundred thirty".