656542112 has 96 divisors (see below), whose sum is σ = 1406522880. Its totient is φ = 300706560.

The previous prime is 656542109. The next prime is 656542151. The reversal of 656542112 is 211245656.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 2892143 + ... + 2892369.

It is an arithmetic number, because the mean of its divisors is an integer number (14651280).

Almost surely, 2^656542112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656542112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703261440).

656542112 is an abundant number, since it is smaller than the sum of its proper divisors (749980768).

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

656542112 is a wasteful number, since it uses less digits than its factorization.

656542112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 386 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 656542112 is about 25623.0777230215. The cubic root of 656542112 is about 869.1355803930.

Adding to 656542112 its reverse (211245656), we get a palindrome (867787768).

The spelling of 656542112 in words is "six hundred fifty-six million, five hundred forty-two thousand, one hundred twelve".