656410620 has 48 divisors (see below), whose sum is σ = 1863848448. Its totient is φ = 172576320.

The previous prime is 656410607. The next prime is 656410627. The reversal of 656410620 is 26014656.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656410627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72784 + ... + 81303.

It is an arithmetic number, because the mean of its divisors is an integer number (38830176).

Almost surely, 2^656410620 is an apocalyptic number.

656410620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

656410620 is an abundant number, since it is smaller than the sum of its proper divisors (1207437828).

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

656410620 is a wasteful number, since it uses less digits than its factorization.

656410620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154170 (or 154168 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 656410620 is about 25620.5117044918. The cubic root of 656410620 is about 869.0775531398.

The spelling of 656410620 in words is "six hundred fifty-six million, four hundred ten thousand, six hundred twenty".