853645 has 16 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 601920.

The previous prime is 853637. The next prime is 853663. The reversal of 853645 is 546358.

It is not a de Polignac number, because 853645 - 2³ = 853637 is a prime.

It is a super-3 number, since 3×853645³ = 1866178395873933375, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210 + ... + 1780.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2⁸⁵³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

853645 is a deficient number, since it is larger than the sum of its proper divisors (299507).

853645 is a wasteful number, since it uses less digits than its factorization.

853645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its digits is 14400, while the sum is 31.

The square root of 853645 is about 923.9291098347. The cubic root of 853645 is about 94.8620342671.

The spelling of 853645 in words is "eight hundred fifty-three thousand, six hundred forty-five".