875669 has 4 divisors (see below), whose sum is σ = 878220. Its totient is φ = 873120.

The previous prime is 875663. The next prime is 875681. The reversal of 875669 is 966578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966578 = 2 ⋅483289.

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 56644 = 905^2 + 238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-875669 is a prime.

It is a super-2 number, since 2×875669² = 1533592395122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (219555).

2⁸⁷⁵⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

875669 is a deficient number, since it is larger than the sum of its proper divisors (2551).

875669 is a wasteful number, since it uses less digits than its factorization.

875669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550.

The product of its digits is 90720, while the sum is 41.

The square root of 875669 is about 935.7718739094. The cubic root of 875669 is about 95.6709291376.

Subtracting 875669 from its reverse (966578), we obtain a palindrome (90909).

The spelling of 875669 in words is "eight hundred seventy-five thousand, six hundred sixty-nine".