656260506 has 24 divisors (see below), whose sum is σ = 1551161664. Its totient is φ = 198866760.

The previous prime is 656260489. The next prime is 656260519. The reversal of 656260506 is 605062656.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 1657026 + ... + 1657421.

It is an arithmetic number, because the mean of its divisors is an integer number (64631736).

Almost surely, 2^656260506 is an apocalyptic number.

656260506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

656260506 is an abundant number, since it is smaller than the sum of its proper divisors (894901158).

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

656260506 is a wasteful number, since it uses less digits than its factorization.

656260506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314466 (or 3314463 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 656260506 is about 25617.5819702016. The cubic root of 656260506 is about 869.0112985475.

It can be divided in two parts, 656 and 260506, that added together give a palindrome (261162).

The spelling of 656260506 in words is "six hundred fifty-six million, two hundred sixty thousand, five hundred six".