866496 has 28 divisors (see below), whose sum is σ = 2293112. Its totient is φ = 288768.

The previous prime is 866477. The next prime is 866513. The reversal of 866496 is 694668.

It is a congruent number.

It is an unprimeable number.

866496 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a nontrivial repunit in base 95.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2065 + ... + 2448.

2⁸⁶⁶⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

866496 is an abundant number, since it is smaller than the sum of its proper divisors (1426616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866496 is a wasteful number, since it uses less digits than its factorization.

866496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528 (or 4518 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 866496 is about 930.8576690343. The cubic root of 866496 is about 95.3356914452.

It can be divided in two parts, 8664 and 96, that multiplied together give a square (831744 = 912²).

The spelling of 866496 in words is "eight hundred sixty-six thousand, four hundred ninety-six".