686274351 has 24 divisors (see below), whose sum is σ = 1070347824. Its totient is φ = 389975040.

The previous prime is 686274349. The next prime is 686274361. The reversal of 686274351 is 153472686.

It is not a de Polignac number, because 686274351 - 2¹ = 686274349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686274301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13711 + ... + 39503.

It is an arithmetic number, because the mean of its divisors is an integer number (44597826).

Almost surely, 2^686274351 is an apocalyptic number.

686274351 is a deficient number, since it is larger than the sum of its proper divisors (384073473).

686274351 is a wasteful number, since it uses less digits than its factorization.

686274351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25991 (or 25984 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 686274351 is about 26196.8385688044. The cubic root of 686274351 is about 882.0622908891.

The spelling of 686274351 in words is "six hundred eighty-six million, two hundred seventy-four thousand, three hundred fifty-one".