866063 has 8 divisors (see below), whose sum is σ = 967296. Its totient is φ = 768600.

The previous prime is 866057. The next prime is 866081. The reversal of 866063 is 360668.

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

It is a cyclic number.

It is not a de Polignac number, because 866063 - 2⁸ = 865807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443 + ... + 1388.

It is an arithmetic number, because the mean of its divisors is an integer number (120912).

2⁸⁶⁶⁰⁶³ is an apocalyptic number.

866063 is a deficient number, since it is larger than the sum of its proper divisors (101233).

866063 is a wasteful number, since it uses less digits than its factorization.

866063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 866063 is about 930.6250587643. The cubic root of 866063 is about 95.3198086127.

The spelling of 866063 in words is "eight hundred sixty-six thousand, sixty-three".