685298275 has 48 divisors (see below), whose sum is σ = 920253600. Its totient is φ = 505128960.

The previous prime is 685298261. The next prime is 685298279. The reversal of 685298275 is 572892586.

It is not a de Polignac number, because 685298275 - 2⁷ = 685298147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685298279) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1582459 + ... + 1582891.

It is an arithmetic number, because the mean of its divisors is an integer number (19171950).

Almost surely, 2^685298275 is an apocalyptic number.

685298275 is a deficient number, since it is larger than the sum of its proper divisors (234955325).

685298275 is a wasteful number, since it uses less digits than its factorization.

685298275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 563 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The square root of 685298275 is about 26178.2022873993. The cubic root of 685298275 is about 881.6439118884.

The spelling of 685298275 in words is "six hundred eighty-five million, two hundred ninety-eight thousand, two hundred seventy-five".