875869 has 4 divisors (see below), whose sum is σ = 878560. Its totient is φ = 873180.

The previous prime is 875851. The next prime is 875893. The reversal of 875869 is 968578.

It is a happy number.

875869 is nontrivially palindromic in base 16.

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 a cyclic number.

It is not a de Polignac number, because 875869 - 2⁵ = 875837 is a prime.

It is a super-2 number, since 2×875869² = 1534293010322, which contains 22 as substring.

It is a Duffinian number.

875869 is an undulating number in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (219640).

2⁸⁷⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

875869 is a deficient number, since it is larger than the sum of its proper divisors (2691).

875869 is a wasteful number, since it uses less digits than its factorization.

875869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its digits is 120960, while the sum is 43.

The square root of 875869 is about 935.8787314604. The cubic root of 875869 is about 95.6782122279.

Subtracting from 875869 its sum of digits (43), we obtain a triangular number (875826 = T₁₃₂₃).

The spelling of 875869 in words is "eight hundred seventy-five thousand, eight hundred sixty-nine".