869599680264 has 96 divisors (see below), whose sum is σ = 2693958359040. Its totient is φ = 248241024000.

The previous prime is 869599680203. The next prime is 869599680283. The reversal of 869599680264 is 462086995968.

869599680264 is a `hidden beast` number, since 8 + 6 + 9 + 599 + 6 + 8 + 0 + 26 + 4 = 666.

It is a super-2 number, since 2×869599680264² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 869599680192 and 869599680201.

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 23 ways as a sum of consecutive naturals, for example, 169417 + ... + 1329624.

It is an arithmetic number, because the mean of its divisors is an integer number (28062066240).

Almost surely, 2^869599680264 is an apocalyptic number.

869599680264 is a gapful number since it is divisible by the number (84) 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 869599680264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346979179520).

869599680264 is an abundant number, since it is smaller than the sum of its proper divisors (1824358678776).

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

869599680264 is a wasteful number, since it uses less digits than its factorization.

869599680264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500211 (or 1500204 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 72.

The spelling of 869599680264 in words is "eight hundred sixty-nine billion, five hundred ninety-nine million, six hundred eighty thousand, two hundred sixty-four".