659795880 has 64 divisors (see below), whose sum is σ = 1983360960. Its totient is φ = 175592448.

The previous prime is 659795869. The next prime is 659795911. The reversal of 659795880 is 88597956.

It is a self number, because there is not a number n which added to its sum of digits gives 659795880.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57504 + ... + 68016.

It is an arithmetic number, because the mean of its divisors is an integer number (30990015).

Almost surely, 2^659795880 is an apocalyptic number.

659795880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

659795880 is an abundant number, since it is smaller than the sum of its proper divisors (1323565080).

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

659795880 is a wasteful number, since it uses less digits than its factorization.

659795880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050 (or 11046 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The square root of 659795880 is about 25686.4921700103. The cubic root of 659795880 is about 870.5690028586.

It can be divided in two parts, 659795 and 880, that added together give a triangular number (660675 = T₁₁₄₉).

The spelling of 659795880 in words is "six hundred fifty-nine million, seven hundred ninety-five thousand, eight hundred eighty".