686885038 has 12 divisors (see below), whose sum is σ = 1198544472. Its totient is φ = 294379260.

The previous prime is 686884999. The next prime is 686885047. The reversal of 686885038 is 830588686.

It is a happy number.

It is a super-2 number, since 2×686885038² = 943622110856522888, which contains 22 as substring.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 3504418 + ... + 3504613.

It is an arithmetic number, because the mean of its divisors is an integer number (99878706).

Almost surely, 2^686885038 is an apocalyptic number.

686885038 is a deficient number, since it is larger than the sum of its proper divisors (511659434).

686885038 is a wasteful number, since it uses less digits than its factorization.

686885038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009047 (or 7009040 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The square root of 686885038 is about 26208.4917154727. The cubic root of 686885038 is about 882.3238501689.

The spelling of 686885038 in words is "six hundred eighty-six million, eight hundred eighty-five thousand, thirty-eight".