659796956 has 54 divisors (see below), whose sum is σ = 1454498640. Its totient is φ = 261005472.

The previous prime is 659796937. The next prime is 659796959. The reversal of 659796956 is 659697956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659796959) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23165 + ... + 43083.

It is an arithmetic number, because the mean of its divisors is an integer number (26935160).

Almost surely, 2^659796956 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 659796956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (727249320).

659796956 is an abundant number, since it is smaller than the sum of its proper divisors (794701684).

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

659796956 is a wasteful number, since it uses less digits than its factorization.

659796956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19963 (or 19941 counting only the distinct ones).

The product of its digits is 27556200, while the sum is 62.

The square root of 659796956 is about 25686.5131148624. The cubic root of 659796956 is about 870.5694761018.

The spelling of 659796956 in words is "six hundred fifty-nine million, seven hundred ninety-six thousand, nine hundred fifty-six".