688485 has 32 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 307008.

The previous prime is 688477. The next prime is 688511. The reversal of 688485 is 584886.

It is not a de Polignac number, because 688485 - 2³ = 688477 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8254 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁶⁸⁸⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

688485 is a deficient number, since it is larger than the sum of its proper divisors (601755).

688485 is a wasteful number, since it uses less digits than its factorization.

688485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 61440, while the sum is 39.

The square root of 688485 is about 829.7499623381. The cubic root of 688485 is about 88.3008384888.

The spelling of 688485 in words is "six hundred eighty-eight thousand, four hundred eighty-five".