686393352 has 96 divisors (see below), whose sum is σ = 1955378880. Its totient is φ = 225529920.

The previous prime is 686393303. The next prime is 686393353. The reversal of 686393352 is 253393686.

686393352 is a `hidden beast` number, since 6 + 8 + 639 + 3 + 3 + 5 + 2 = 666.

It is a super-2 number, since 2×686393352² = 942271667339591808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686393298 and 686393307.

It is not an unprimeable number, because it can be changed into a prime (686393353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135538 + ... + 140510.

It is an arithmetic number, because the mean of its divisors is an integer number (20368530).

Almost surely, 2^686393352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686393352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977689440).

686393352 is an abundant number, since it is smaller than the sum of its proper divisors (1268985528).

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

686393352 is a wasteful number, since it uses less digits than its factorization.

686393352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065 (or 5049 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 686393352 is about 26199.1097558677. The cubic root of 686393352 is about 882.1132715832.

The spelling of 686393352 in words is "six hundred eighty-six million, three hundred ninety-three thousand, three hundred fifty-two".