686834444 has 6 divisors (see below), whose sum is σ = 1201960284. Its totient is φ = 343417220.

The previous prime is 686834431. The next prime is 686834471. The reversal of 686834444 is 444438686.

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 as a sum of consecutive naturals, namely, 85854302 + ... + 85854309.

It is an arithmetic number, because the mean of its divisors is an integer number (200326714).

Almost surely, 2^686834444 is an apocalyptic number.

It is an amenable number.

686834444 is a deficient number, since it is larger than the sum of its proper divisors (515125840).

686834444 is a wasteful number, since it uses less digits than its factorization.

686834444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171708615 (or 171708613 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 47.

The square root of 686834444 is about 26207.5264761862. The cubic root of 686834444 is about 882.3021864812.

The spelling of 686834444 in words is "six hundred eighty-six million, eight hundred thirty-four thousand, four hundred forty-four".