686044296 has 192 divisors, whose sum is σ = 2260483200. Its totient is φ = 192157056.

The previous prime is 686044283. The next prime is 686044309. The reversal of 686044296 is 692440686.

686044296 is a `hidden beast` number, since 68 + 60 + 442 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (686044283) and next prime (686044309).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 560341 + ... + 561563.

It is an arithmetic number, because the mean of its divisors is an integer number (11773350).

Almost surely, 2^686044296 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 686044296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130241600).

686044296 is an abundant number, since it is smaller than the sum of its proper divisors (1574438904).

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

686044296 is a wasteful number, since it uses less digits than its factorization.

686044296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 686044296 is about 26192.4473083368. The cubic root of 686044296 is about 881.9637173283.

It can be divided in two parts, 68604 and 4296, that added together give a square (72900 = 270²).

The spelling of 686044296 in words is "six hundred eighty-six million, forty-four thousand, two hundred ninety-six".