853653 has 4 divisors (see below), whose sum is σ = 1138208. Its totient is φ = 569100.

The previous prime is 853637. The next prime is 853663. The reversal of 853653 is 356358.

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 not a de Polignac number, because 853653 - 2⁴ = 853637 is a prime.

It is a D-number.

It is a Duffinian number.

853653 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 853653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853663) 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, 142273 + ... + 142278.

It is an arithmetic number, because the mean of its divisors is an integer number (284552).

2⁸⁵³⁶⁵³ is an apocalyptic number.

It is an amenable number.

853653 is a deficient number, since it is larger than the sum of its proper divisors (284555).

853653 is a wasteful number, since it uses less digits than its factorization.

853653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284554.

The product of its digits is 10800, while the sum is 30.

The square root of 853653 is about 923.9334391611. The cubic root of 853653 is about 94.8623306018.

The spelling of 853653 in words is "eight hundred fifty-three thousand, six hundred fifty-three".