887666 has 8 divisors (see below), whose sum is σ = 1433964. Its totient is φ = 409680.

The previous prime is 887659. The next prime is 887669. The reversal of 887666 is 666788.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 32041 = 925^2 + 179^2 .

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

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (887669) by changing a digit.

887666 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 17045 + ... + 17096.

2⁸⁸⁷⁶⁶⁶ is an apocalyptic number.

887666 is a deficient number, since it is larger than the sum of its proper divisors (546298).

887666 is a wasteful number, since it uses less digits than its factorization.

887666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34156.

The product of its digits is 96768, while the sum is 41.

The square root of 887666 is about 942.1602836036. The cubic root of 887666 is about 96.1058583438.

The spelling of 887666 in words is "eight hundred eighty-seven thousand, six hundred sixty-six".