685075 has 12 divisors (see below), whose sum is σ = 864280. Its totient is φ = 538560.

The previous prime is 685073. The next prime is 685081. The reversal of 685075 is 570586.

It is not a de Polignac number, because 685075 - 2¹ = 685073 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (685073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471 + ... + 1879.

2⁶⁸⁵⁰⁷⁵ is an apocalyptic number.

685075 is a deficient number, since it is larger than the sum of its proper divisors (179205).

685075 is a wasteful number, since it uses less digits than its factorization.

685075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 685075 is about 827.6925757792. The cubic root of 685075 is about 88.1548152891.

The spelling of 685075 in words is "six hundred eighty-five thousand, seventy-five".