35865 has 12 divisors (see below), whose sum is σ = 62244. Its totient is φ = 19104.

The previous prime is 35863. The next prime is 35869. The reversal of 35865 is 56853.

It can be written as a sum of positive squares in 2 ways, for example, as 15129 + 20736 = 123^2 + 144^2 .

It is not a de Polignac number, because 35865 - 2¹ = 35863 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 35865.

It is not an unprimeable number, because it can be changed into a prime (35863) 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, 354 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (5187).

2³⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

35865 is a deficient number, since it is larger than the sum of its proper divisors (26379).

35865 is a wasteful number, since it uses less digits than its factorization.

35865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 805 counting only the distinct ones).

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

The square root of 35865 is about 189.3805692250. The cubic root of 35865 is about 32.9779466980.

It can be divided in two parts, 35 and 865, that added together give a square (900 = 30²).

The spelling of 35865 in words is "thirty-five thousand, eight hundred sixty-five".