659485680 has 160 divisors (see below), whose sum is σ = 2366515200. Its totient is φ = 148801536.

The previous prime is 659485667. The next prime is 659485699. The reversal of 659485680 is 86584956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130236 + ... + 135204.

It is an arithmetic number, because the mean of its divisors is an integer number (14790720).

Almost surely, 2^659485680 is an apocalyptic number.

659485680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659485680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1183257600).

659485680 is an abundant number, since it is smaller than the sum of its proper divisors (1707029520).

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

659485680 is a wasteful number, since it uses less digits than its factorization.

659485680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071 (or 5065 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The square root of 659485680 is about 25680.4532670278. The cubic root of 659485680 is about 870.4325501339.

The spelling of 659485680 in words is "six hundred fifty-nine million, four hundred eighty-five thousand, six hundred eighty".