686583044 has 24 divisors (see below), whose sum is σ = 1374038400. Its totient is φ = 294062976.

The previous prime is 686583019. The next prime is 686583047. The reversal of 686583044 is 440385686.

It is a junction number, because it is equal to n+sod(n) for n = 686582986 and 686583004.

It is not an unprimeable number, because it can be changed into a prime (686583047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42857 + ... + 56655.

It is an arithmetic number, because the mean of its divisors is an integer number (57251600).

Almost surely, 2^686583044 is an apocalyptic number.

It is an amenable number.

686583044 is an abundant number, since it is smaller than the sum of its proper divisors (687455356).

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

686583044 is a wasteful number, since it uses less digits than its factorization.

686583044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587 (or 15585 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 686583044 is about 26202.7297051281. The cubic root of 686583044 is about 882.1945245159.

The spelling of 686583044 in words is "six hundred eighty-six million, five hundred eighty-three thousand, forty-four".