686249996 has 12 divisors (see below), whose sum is σ = 1204776552. Its totient is φ = 342028128.

The previous prime is 686249987. The next prime is 686250001. The reversal of 686249996 is 699942686.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 272810 + ... + 275313.

It is an arithmetic number, because the mean of its divisors is an integer number (100398046).

Almost surely, 2^686249996 is an apocalyptic number.

It is an amenable number.

686249996 is a deficient number, since it is larger than the sum of its proper divisors (518526556).

686249996 is a wasteful number, since it uses less digits than its factorization.

686249996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548440 (or 548438 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 59.

The square root of 686249996 is about 26196.3737185130. The cubic root of 686249996 is about 882.0518563444.

The spelling of 686249996 in words is "six hundred eighty-six million, two hundred forty-nine thousand, nine hundred ninety-six".