659712864 has 96 divisors (see below), whose sum is σ = 1813674240. Its totient is φ = 209572352.

The previous prime is 659712853. The next prime is 659712877. The reversal of 659712864 is 468217956.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 1123579 + ... + 1124165.

It is an arithmetic number, because the mean of its divisors is an integer number (18892440).

Almost surely, 2^659712864 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 659712864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906837120).

659712864 is an abundant number, since it is smaller than the sum of its proper divisors (1153961376).

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

659712864 is a wasteful number, since it uses less digits than its factorization.

659712864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1124 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 659712864 is about 25684.8761725651. The cubic root of 659712864 is about 870.5324894511.

The spelling of 659712864 in words is "six hundred fifty-nine million, seven hundred twelve thousand, eight hundred sixty-four".