659129856 has 160 divisors (see below), whose sum is σ = 2189645568. Its totient is φ = 171171840.

The previous prime is 659129789. The next prime is 659129881. The reversal of 659129856 is 658921956.

It is a junction number, because it is equal to n+sod(n) for n = 659129799 and 659129808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115486 + ... + 121058.

Almost surely, 2^659129856 is an apocalyptic number.

659129856 is a gapful number since it is divisible by the number (66) 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 659129856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094822784).

659129856 is an abundant number, since it is smaller than the sum of its proper divisors (1530515712).

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

659129856 is a wasteful number, since it uses less digits than its factorization.

659129856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612 (or 5596 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The square root of 659129856 is about 25673.5244171890. The cubic root of 659129856 is about 870.2759753359.

The spelling of 659129856 in words is "six hundred fifty-nine million, one hundred twenty-nine thousand, eight hundred fifty-six".