686914556396 has 6 divisors (see below), whose sum is σ = 1202100473700. Its totient is φ = 343457278196.

The previous prime is 686914556359. The next prime is 686914556401. The reversal of 686914556396 is 693655419686.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85864319546 + ... + 85864319553.

It is an arithmetic number, because the mean of its divisors is an integer number (200350078950).

Almost surely, 2^686914556396 is an apocalyptic number.

It is an amenable number.

686914556396 is a deficient number, since it is larger than the sum of its proper divisors (515185917304).

686914556396 is a wasteful number, since it uses less digits than its factorization.

686914556396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171728639103 (or 171728639101 counting only the distinct ones).

The product of its digits is 251942400, while the sum is 68.

The spelling of 686914556396 in words is "six hundred eighty-six billion, nine hundred fourteen million, five hundred fifty-six thousand, three hundred ninety-six".