853641 has 6 divisors (see below), whose sum is σ = 1233050. Its totient is φ = 569088.

The previous prime is 853637. The next prime is 853663. The reversal of 853641 is 146358.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 335241 = 720^2 + 579^2 .

It is not a de Polignac number, because 853641 - 2² = 853637 is a prime.

It is a Duffinian number.

853641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (853241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47416 + ... + 47433.

2⁸⁵³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

853641 is a deficient number, since it is larger than the sum of its proper divisors (379409).

853641 is a wasteful number, since it uses less digits than its factorization.

853641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94855 (or 94852 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 853641 is about 923.9269451640. The cubic root of 853641 is about 94.8618860990.

Adding to 853641 its reverse (146358), we get a palindrome (999999).

The spelling of 853641 in words is "eight hundred fifty-three thousand, six hundred forty-one".