686622646226 has 32 divisors (see below), whose sum is σ = 1132629924096. Its totient is φ = 309585042000.

The previous prime is 686622646219. The next prime is 686622646271. The reversal of 686622646226 is 622646226686.

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, 6782981 + ... + 6883463.

It is an arithmetic number, because the mean of its divisors is an integer number (35394685128).

Almost surely, 2^686622646226 is an apocalyptic number.

686622646226 is a deficient number, since it is larger than the sum of its proper divisors (446007277870).

686622646226 is a wasteful number, since it uses less digits than its factorization.

686622646226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102998.

The product of its digits is 23887872, while the sum is 56.

The spelling of 686622646226 in words is "six hundred eighty-six billion, six hundred twenty-two million, six hundred forty-six thousand, two hundred twenty-six".