686959460351 has 4 divisors (see below), whose sum is σ = 688278001104. Its totient is φ = 685640919600.

The previous prime is 686959460281. The next prime is 686959460377. The reversal of 686959460351 is 153064959686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 686959460351 - 2³⁰ = 685885718527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686959460951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659269595 + ... + 659270636.

It is an arithmetic number, because the mean of its divisors is an integer number (172069500276).

Almost surely, 2^686959460351 is an apocalyptic number.

686959460351 is a deficient number, since it is larger than the sum of its proper divisors (1318540753).

686959460351 is a wasteful number, since it uses less digits than its factorization.

686959460351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318540752.

The product of its (nonzero) digits is 41990400, while the sum is 62.

The spelling of 686959460351 in words is "six hundred eighty-six billion, nine hundred fifty-nine million, four hundred sixty thousand, three hundred fifty-one".