866700 has 90 divisors (see below), whose sum is σ = 2835756. Its totient is φ = 228960.

The previous prime is 866693. The next prime is 866707. The reversal of 866700 is 7668.

866700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (866693) and next prime (866707).

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (866707) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 8047 + ... + 8153.

2⁸⁶⁶⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417878).

866700 is an abundant number, since it is smaller than the sum of its proper divisors (1969056).

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

866700 is a wasteful number, since it uses less digits than its factorization.

866700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 866700 is about 930.9672389510. The cubic root of 866700 is about 95.3431725165.

It can be divided in two parts, 86 and 6700, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 866700 in words is "eight hundred sixty-six thousand, seven hundred".