659798850 has 96 divisors (see below), whose sum is σ = 1670268096. Its totient is φ = 172339200.

The previous prime is 659798827. The next prime is 659798869. The reversal of 659798850 is 58897956.

It is a super-2 number, since 2×659798850² = 870669044922645000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1993185 + ... + 1993515.

It is an arithmetic number, because the mean of its divisors is an integer number (17398626).

Almost surely, 2^659798850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659798850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835134048).

659798850 is an abundant number, since it is smaller than the sum of its proper divisors (1010469246).

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

659798850 is a wasteful number, since it uses less digits than its factorization.

659798850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

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

The square root of 659798850 is about 25686.5499824324. The cubic root of 659798850 is about 870.5703091142.

The spelling of 659798850 in words is "six hundred fifty-nine million, seven hundred ninety-eight thousand, eight hundred fifty".