686407473 has 8 divisors (see below), whose sum is σ = 1016900000. Its totient is φ = 457604964.

The previous prime is 686407459. The next prime is 686407489. The reversal of 686407473 is 374704686.

It is not a de Polignac number, because 686407473 - 2⁸ = 686407217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686407493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12711223 + ... + 12711276.

It is an arithmetic number, because the mean of its divisors is an integer number (127112500).

Almost surely, 2^686407473 is an apocalyptic number.

It is an amenable number.

686407473 is a deficient number, since it is larger than the sum of its proper divisors (330492527).

686407473 is a wasteful number, since it uses less digits than its factorization.

686407473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25422508 (or 25422502 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 686407473 is about 26199.3792483715. The cubic root of 686407473 is about 882.1193207074.

The spelling of 686407473 in words is "six hundred eighty-six million, four hundred seven thousand, four hundred seventy-three".