875665 has 16 divisors (see below), whose sum is σ = 1216512. Its totient is φ = 592704.

The previous prime is 875663. The next prime is 875681. The reversal of 875665 is 566578.

875665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 875665 - 2¹ = 875663 is a prime.

It is a Duffinian number.

Its product of digits (50400) is a multiple of the sum of its prime divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4347 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (76032).

2⁸⁷⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

875665 is a deficient number, since it is larger than the sum of its proper divisors (340847).

875665 is a wasteful number, since it uses less digits than its factorization.

875665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its digits is 50400, while the sum is 37.

The square root of 875665 is about 935.7697366340. The cubic root of 875665 is about 95.6707834645.

It can be divided in two parts, 87566 and 5, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 875665 in words is "eight hundred seventy-five thousand, six hundred sixty-five".