686613090290 has 32 divisors (see below), whose sum is σ = 1241491420224. Its totient is φ = 273403771200.

The previous prime is 686613090271. The next prime is 686613090323. The reversal of 686613090290 is 92090316686.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36031265 + ... + 36050315.

It is an arithmetic number, because the mean of its divisors is an integer number (38796606882).

Almost surely, 2^686613090290 is an apocalyptic number.

686613090290 is a deficient number, since it is larger than the sum of its proper divisors (554878329934).

686613090290 is a wasteful number, since it uses less digits than its factorization.

686613090290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35162.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 686613090290 in words is "six hundred eighty-six billion, six hundred thirteen million, ninety thousand, two hundred ninety".