686963755317 has 16 divisors (see below), whose sum is σ = 1066552894080. Its totient is φ = 385144099392.

The previous prime is 686963755207. The next prime is 686963755343. The reversal of 686963755317 is 713557369686.

It is not a de Polignac number, because 686963755317 - 2¹¹ = 686963753269 is a prime.

It is a super-2 number, since 2×686963755317² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686963755417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308607942 + ... + 308610167.

It is an arithmetic number, because the mean of its divisors is an integer number (66659555880).

Almost surely, 2^686963755317 is an apocalyptic number.

It is an amenable number.

686963755317 is a deficient number, since it is larger than the sum of its proper divisors (379589138763).

686963755317 is a wasteful number, since it uses less digits than its factorization.

686963755317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617218172.

The product of its digits is 171460800, while the sum is 66.

The spelling of 686963755317 in words is "six hundred eighty-six billion, nine hundred sixty-three million, seven hundred fifty-five thousand, three hundred seventeen".