866901 has 8 divisors (see below), whose sum is σ = 1321024. Its totient is φ = 495360.

The previous prime is 866869. The next prime is 866909. The reversal of 866901 is 109668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866901 - 2⁵ = 866869 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866909) 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 7 ways as a sum of consecutive naturals, for example, 20620 + ... + 20661.

It is an arithmetic number, because the mean of its divisors is an integer number (165128).

2⁸⁶⁶⁹⁰¹ is an apocalyptic number.

It is an amenable number.

866901 is a deficient number, since it is larger than the sum of its proper divisors (454123).

866901 is a wasteful number, since it uses less digits than its factorization.

866901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41291.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 866901 is about 931.0751849341. The cubic root of 866901 is about 95.3505424239.

The spelling of 866901 in words is "eight hundred sixty-six thousand, nine hundred one".