659812032 has 126 divisors (see below), whose sum is σ = 2079011844. Its totient is φ = 199921920.

The previous prime is 659812019. The next prime is 659812039. The reversal of 659812032 is 230218956.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (659812039) 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, 64963 + ... + 74429.

It is an arithmetic number, because the mean of its divisors is an integer number (16500094).

Almost surely, 2^659812032 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 659812032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039505922).

659812032 is an abundant number, since it is smaller than the sum of its proper divisors (1419199812).

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

659812032 is a wasteful number, since it uses less digits than its factorization.

659812032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507 (or 9483 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 659812032 is about 25686.8065745822. The cubic root of 659812032 is about 870.5761067303.

The spelling of 659812032 in words is "six hundred fifty-nine million, eight hundred twelve thousand, thirty-two".