685882 has 8 divisors (see below), whose sum is σ = 1089396. Its totient is φ = 322752.

The previous prime is 685859. The next prime is 685907. The reversal of 685882 is 288586.

It can be written as a sum of positive squares in 2 ways, for example, as 516961 + 168921 = 719^2 + 411^2 .

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

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10053 + ... + 10120.

2⁶⁸⁵⁸⁸² is an apocalyptic number.

685882 is a deficient number, since it is larger than the sum of its proper divisors (403514).

685882 is a wasteful number, since it uses less digits than its factorization.

685882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20192.

The product of its digits is 30720, while the sum is 37.

The square root of 685882 is about 828.1799321404. The cubic root of 685882 is about 88.1894163767.

The spelling of 685882 in words is "six hundred eighty-five thousand, eight hundred eighty-two".