685153 has 4 divisors (see below), whose sum is σ = 783040. Its totient is φ = 587268.

The previous prime is 685141. The next prime is 685169. The reversal of 685153 is 351586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 685153 - 2¹³ = 676961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685103) 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, 48933 + ... + 48946.

It is an arithmetic number, because the mean of its divisors is an integer number (195760).

2⁶⁸⁵¹⁵³ is an apocalyptic number.

It is an amenable number.

685153 is a deficient number, since it is larger than the sum of its proper divisors (97887).

685153 is an equidigital number, since it uses as much as digits as its factorization.

685153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97886.

The product of its digits is 3600, while the sum is 28.

The square root of 685153 is about 827.7396933819. The cubic root of 685153 is about 88.1581608180.

It can be divided in two parts, 685 and 153, that added together give a palindrome (838).

The spelling of 685153 in words is "six hundred eighty-five thousand, one hundred fifty-three".