866336 has 12 divisors (see below), whose sum is σ = 1705662. Its totient is φ = 433152.

The previous prime is 866329. The next prime is 866353. The reversal of 866336 is 633668.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 126736 = 860^2 + 356^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 27073 = 866336 / (8 + 6 + 6 + 3 + 3 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13505 + ... + 13568.

2⁸⁶⁶³³⁶ is an apocalyptic number.

It is an amenable number.

866336 is a deficient number, since it is larger than the sum of its proper divisors (839326).

866336 is a wasteful number, since it uses less digits than its factorization.

866336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27083 (or 27075 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 866336 is about 930.7717228193. The cubic root of 866336 is about 95.3298231167.

The spelling of 866336 in words is "eight hundred sixty-six thousand, three hundred thirty-six".