656322122 has 8 divisors (see below), whose sum is σ = 997969476. Its totient is φ = 323665632.

The previous prime is 656322101. The next prime is 656322127. The reversal of 656322122 is 221223656.

It can be written as a sum of positive squares in 2 ways, for example, as 651831961 + 4490161 = 25531^2 + 2119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (656322127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247533 + ... + 2247824.

Almost surely, 2^656322122 is an apocalyptic number.

656322122 is a deficient number, since it is larger than the sum of its proper divisors (341647354).

656322122 is a wasteful number, since it uses less digits than its factorization.

656322122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495432.

The product of its digits is 8640, while the sum is 29.

The square root of 656322122 is about 25618.7845535263. The cubic root of 656322122 is about 869.0384947213.

Adding to 656322122 its reverse (221223656), we get a palindrome (877545778).

The spelling of 656322122 in words is "six hundred fifty-six million, three hundred twenty-two thousand, one hundred twenty-two".