659921472 has 224 divisors, whose sum is σ = 2245766400. Its totient is φ = 186126336.

The previous prime is 659921467. The next prime is 659921503. The reversal of 659921472 is 274129956.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1076238 + ... + 1076850.

Almost surely, 2^659921472 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 659921472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1122883200).

659921472 is an abundant number, since it is smaller than the sum of its proper divisors (1585844928).

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

659921472 is a wasteful number, since it uses less digits than its factorization.

659921472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 714 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 659921472 is about 25688.9367627389. The cubic root of 659921472 is about 870.6242368933.

The spelling of 659921472 in words is "six hundred fifty-nine million, nine hundred twenty-one thousand, four hundred seventy-two".