686354344 has 16 divisors (see below), whose sum is σ = 1385908020. Its totient is φ = 316778880.

The previous prime is 686354341. The next prime is 686354363. The reversal of 686354344 is 443453686.

It can be written as a sum of positive squares in 2 ways, for example, as 685916100 + 438244 = 26190^2 + 662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 686354344.

It is not an unprimeable number, because it can be changed into a prime (686354341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3299677 + ... + 3299884.

Almost surely, 2^686354344 is an apocalyptic number.

It is an amenable number.

686354344 is an abundant number, since it is smaller than the sum of its proper divisors (699553676).

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

686354344 is a wasteful number, since it uses less digits than its factorization.

686354344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599580 (or 6599576 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The square root of 686354344 is about 26198.3652925140. The cubic root of 686354344 is about 882.0965609870.

The spelling of 686354344 in words is "six hundred eighty-six million, three hundred fifty-four thousand, three hundred forty-four".