868066 has 16 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 409024.

The previous prime is 868051. The next prime is 868069. The reversal of 868066 is 660868.

It is a happy number.

It is an Ulam number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (868069) by changing a digit.

868066 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5115 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2⁸⁶⁸⁰⁶⁶ is an apocalyptic number.

868066 is a deficient number, since it is larger than the sum of its proper divisors (510878).

868066 is a wasteful number, since it uses less digits than its factorization.

868066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 868066 is about 931.7005956851. The cubic root of 868066 is about 95.3932361335.

The spelling of 868066 in words is "eight hundred sixty-eight thousand, sixty-six".