656642382 has 32 divisors (see below), whose sum is σ = 1449947520. Its totient is φ = 196583520.

The previous prime is 656642381. The next prime is 656642417. The reversal of 656642382 is 283246656.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656642381) 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, 54457 + ... + 65412.

It is an arithmetic number, because the mean of its divisors is an integer number (45310860).

Almost surely, 2^656642382 is an apocalyptic number.

656642382 is an abundant number, since it is smaller than the sum of its proper divisors (793305138).

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

656642382 is a wasteful number, since it uses less digits than its factorization.

656642382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119968.

The product of its digits is 414720, while the sum is 42.

The square root of 656642382 is about 25625.0342829039. The cubic root of 656642382 is about 869.1798242107.

The spelling of 656642382 in words is "six hundred fifty-six million, six hundred forty-two thousand, three hundred eighty-two".