866002 has 16 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 412960.

The previous prime is 865993. The next prime is 866003. The reversal of 866002 is 200668.

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

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 7 ways as a sum of consecutive naturals, for example, 4749 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁸⁶⁶⁰⁰² is an apocalyptic number.

866002 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

866002 is a deficient number, since it is larger than the sum of its proper divisors (494798).

866002 is a wasteful number, since it uses less digits than its factorization.

866002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 866002 is about 930.5922845156. The cubic root of 866002 is about 95.3175706520.

The spelling of 866002 in words is "eight hundred sixty-six thousand, two".