685263 has 4 divisors (see below), whose sum is σ = 913688. Its totient is φ = 456840.

The previous prime is 685249. The next prime is 685271. The reversal of 685263 is 362586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 685263 - 2⁴ = 685247 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 685263.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685263.

It is not an unprimeable number, because it can be changed into a prime (685063) 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, 114208 + ... + 114213.

It is an arithmetic number, because the mean of its divisors is an integer number (228422).

2⁶⁸⁵²⁶³ is an apocalyptic number.

685263 is a deficient number, since it is larger than the sum of its proper divisors (228425).

685263 is a wasteful number, since it uses less digits than its factorization.

685263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228424.

The product of its digits is 8640, while the sum is 30.

The square root of 685263 is about 827.8061367253. The cubic root of 685263 is about 88.1628784401.

The spelling of 685263 in words is "six hundred eighty-five thousand, two hundred sixty-three".