659683890432 has 864 divisors, whose sum is σ = 2337288425472. Its totient is φ = 174990606336.

The previous prime is 659683890361. The next prime is 659683890449. The reversal of 659683890432 is 234098386956.

659683890432 is a `hidden beast` number, since 6 + 59 + 68 + 3 + 8 + 90 + 432 = 666.

It is a super-2 number, since 2×659683890432² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 659683890432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1206003183 + ... + 1206003729.

Almost surely, 2^659683890432 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 659683890432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168644212736).

659683890432 is an abundant number, since it is smaller than the sum of its proper divisors (1677604535040).

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

659683890432 is a wasteful number, since it uses less digits than its factorization.

659683890432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 659683890432 in words is "six hundred fifty-nine billion, six hundred eighty-three million, eight hundred ninety thousand, four hundred thirty-two".