869625 has 24 divisors (see below), whose sum is σ = 1569672. Its totient is φ = 463200.

The previous prime is 869599. The next prime is 869657. The reversal of 869625 is 526968.

It can be written as a sum of positive squares in 4 ways, for example, as 184041 + 685584 = 429^2 + 828^2 .

It is not a de Polignac number, because 869625 - 2⁸ = 869369 is a prime.

It is a Curzon number.

869625 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 869625.

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 869625.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 739 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (65403).

2⁸⁶⁹⁶²⁵ is an apocalyptic number.

It is an amenable number.

869625 is a deficient number, since it is larger than the sum of its proper divisors (700047).

869625 is a wasteful number, since it uses less digits than its factorization.

869625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 781 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 869625 is about 932.5368625422. The cubic root of 869625 is about 95.4503090266.

The spelling of 869625 in words is "eight hundred sixty-nine thousand, six hundred twenty-five".