685708795 has 4 divisors (see below), whose sum is σ = 822850560. Its totient is φ = 548567032.

The previous prime is 685708763. The next prime is 685708813. The reversal of 685708795 is 597807586.

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 685708795 - 2⁵ = 685708763 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 68570875 + ... + 68570884.

It is an arithmetic number, because the mean of its divisors is an integer number (205712640).

Almost surely, 2^685708795 is an apocalyptic number.

685708795 is a deficient number, since it is larger than the sum of its proper divisors (137141765).

685708795 is a wasteful number, since it uses less digits than its factorization.

685708795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137141764.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The square root of 685708795 is about 26186.0419880516. The cubic root of 685708795 is about 881.8199229411.

The spelling of 685708795 in words is "six hundred eighty-five million, seven hundred eight thousand, seven hundred ninety-five".