686294372 has 12 divisors (see below), whose sum is σ = 1221371760. Its totient is φ = 337331016.

The previous prime is 686294353. The next prime is 686294387. The reversal of 686294372 is 273492686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453778 + ... + 1454249.

It is an arithmetic number, because the mean of its divisors is an integer number (101780980).

Almost surely, 2^686294372 is an apocalyptic number.

It is an amenable number.

686294372 is a deficient number, since it is larger than the sum of its proper divisors (535077388).

686294372 is a wasteful number, since it uses less digits than its factorization.

686294372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908090 (or 2908088 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 686294372 is about 26197.2206922796. The cubic root of 686294372 is about 882.0708684098.

The spelling of 686294372 in words is "six hundred eighty-six million, two hundred ninety-four thousand, three hundred seventy-two".