866925 has 18 divisors (see below), whose sum is σ = 1553162. Its totient is φ = 462240.

The previous prime is 866917. The next prime is 866927. The reversal of 866925 is 529668.

It can be written as a sum of positive squares in 3 ways, for example, as 272484 + 594441 = 522^2 + 771^2 .

It is not a de Polignac number, because 866925 - 2³ = 866917 is a prime.

It is a Duffinian number.

866925 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 866925.

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 866925.

It is not an unprimeable number, because it can be changed into a prime (866927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1702 + ... + 2151.

2⁸⁶⁶⁹²⁵ is an apocalyptic number.

It is an amenable number.

866925 is a deficient number, since it is larger than the sum of its proper divisors (686237).

866925 is a wasteful number, since it uses less digits than its factorization.

866925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869 (or 3861 counting only the distinct ones).

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

The square root of 866925 is about 931.0880731703. The cubic root of 866925 is about 95.3514223367.

The spelling of 866925 in words is "eight hundred sixty-six thousand, nine hundred twenty-five".