685027 has 4 divisors (see below), whose sum is σ = 782896. Its totient is φ = 587160.

The previous prime is 685019. The next prime is 685031. The reversal of 685027 is 720586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720586 = 2 ⋅360293.

It is not a de Polignac number, because 685027 - 2³ = 685019 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 684986 and 685004.

It is not an unprimeable number, because it can be changed into a prime (685057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48924 + ... + 48937.

It is an arithmetic number, because the mean of its divisors is an integer number (195724).

2⁶⁸⁵⁰²⁷ is an apocalyptic number.

685027 is a deficient number, since it is larger than the sum of its proper divisors (97869).

685027 is an equidigital number, since it uses as much as digits as its factorization.

685027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97868.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 685027 is about 827.6635789981. The cubic root of 685027 is about 88.1527563759.

The spelling of 685027 in words is "six hundred eighty-five thousand, twenty-seven".