553663620 has 48 divisors (see below), whose sum is σ = 1722510720. Its totient is φ = 147643488.

The previous prime is 553663603. The next prime is 553663639. The reversal of 553663620 is 26366355.

553663620 is a `hidden beast` number, since 5 + 536 + 63 + 62 + 0 = 666.

It is a super-2 number, since 2×553663620² = 613086808223008800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512112 + ... + 513191.

It is an arithmetic number, because the mean of its divisors is an integer number (35885640).

Almost surely, 2^553663620 is an apocalyptic number.

It is an amenable number.

553663620 is an abundant number, since it is smaller than the sum of its proper divisors (1168847100).

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

553663620 is a wasteful number, since it uses less digits than its factorization.

553663620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025321 (or 1025313 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 553663620 is about 23530.0577984840. The cubic root of 553663620 is about 821.1364472595.

The spelling of 553663620 in words is "five hundred fifty-three million, six hundred sixty-three thousand, six hundred twenty".