866877 has 16 divisors (see below), whose sum is σ = 1277760. Its totient is φ = 518400.

The previous prime is 866869. The next prime is 866909. The reversal of 866877 is 778668.

866877 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 866877 - 2³ = 866869 is a prime.

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 866877.

It is not an unprimeable number, because it can be changed into a prime (866857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3477 + ... + 3717.

It is an arithmetic number, because the mean of its divisors is an integer number (79860).

2⁸⁶⁶⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

866877 is a deficient number, since it is larger than the sum of its proper divisors (410883).

866877 is a wasteful number, since it uses less digits than its factorization.

866877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its digits is 112896, while the sum is 42.

The square root of 866877 is about 931.0622965194. The cubic root of 866877 is about 95.3496624949.

Subtracting from 866877 its reverse (778668), we obtain a square (88209 = 297²).

The spelling of 866877 in words is "eight hundred sixty-six thousand, eight hundred seventy-seven".