685497 has 8 divisors (see below), whose sum is σ = 925344. Its totient is φ = 451328.

The previous prime is 685493. The next prime is 685511. The reversal of 685497 is 794586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685497 - 2² = 685493 is a prime.

It is a super-2 number, since 2×685497² = 939812274018, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685497.

It is not an unprimeable number, because it can be changed into a prime (685493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (115668).

2⁶⁸⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

685497 is a deficient number, since it is larger than the sum of its proper divisors (239847).

685497 is a wasteful number, since it uses less digits than its factorization.

685497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its digits is 60480, while the sum is 39.

The square root of 685497 is about 827.9474621013. The cubic root of 685497 is about 88.1729124299.

It can be divided in two parts, 68 and 5497, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 685497 in words is "six hundred eighty-five thousand, four hundred ninety-seven".