685053 has 12 divisors (see below), whose sum is σ = 1000480. Its totient is φ = 451656.

The previous prime is 685051. The next prime is 685057. The reversal of 685053 is 350586.

It is not a de Polignac number, because 685053 - 2¹ = 685051 is a prime.

It is a super-2 number, since 2×685053² = 938595225618, which contains 22 as substring.

It is a Duffinian number.

685053 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558 + ... + 1296.

2⁶⁸⁵⁰⁵³ is an apocalyptic number.

It is an amenable number.

685053 is a deficient number, since it is larger than the sum of its proper divisors (315427).

685053 is a wasteful number, since it uses less digits than its factorization.

685053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 685053 is about 827.6792857140. The cubic root of 685053 is about 88.1538716325.

It can be divided in two parts, 6850 and 53, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 685053 in words is "six hundred eighty-five thousand, fifty-three".