685914593 has 32 divisors (see below), whose sum is σ = 866880000. Its totient is φ = 539275968.

The previous prime is 685914563. The next prime is 685914601. The reversal of 685914593 is 395419586.

It is a happy number.

It is not a de Polignac number, because 685914593 - 2⁶ = 685914529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (685914563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 886955 + ... + 887727.

It is an arithmetic number, because the mean of its divisors is an integer number (27090000).

Almost surely, 2^685914593 is an apocalyptic number.

It is an amenable number.

685914593 is a deficient number, since it is larger than the sum of its proper divisors (180965407).

685914593 is a wasteful number, since it uses less digits than its factorization.

685914593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 992 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The square root of 685914593 is about 26189.9712294611. The cubic root of 685914593 is about 881.9081327009.

The spelling of 685914593 in words is "six hundred eighty-five million, nine hundred fourteen thousand, five hundred ninety-three".