656385132 has 96 divisors (see below), whose sum is σ = 1749888000. Its totient is φ = 189953280.

The previous prime is 656385083. The next prime is 656385139. The reversal of 656385132 is 231583656.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (656385139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217369 + ... + 220367.

It is an arithmetic number, because the mean of its divisors is an integer number (18228000).

Almost surely, 2^656385132 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 656385132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874944000).

656385132 is an abundant number, since it is smaller than the sum of its proper divisors (1093502868).

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

656385132 is a wasteful number, since it uses less digits than its factorization.

656385132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103 (or 3101 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 656385132 is about 25620.0142857103. The cubic root of 656385132 is about 869.0663044210.

The spelling of 656385132 in words is "six hundred fifty-six million, three hundred eighty-five thousand, one hundred thirty-two".