866052 has 60 divisors (see below), whose sum is σ = 2480016. Its totient is φ = 262440.

The previous prime is 866051. The next prime is 866053. The reversal of 866052 is 250668.

It is an interprime number because it is at equal distance from previous prime (866051) and next prime (866053).

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (866051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78727 + ... + 78737.

2⁸⁶⁶⁰⁵² 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 866052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240008).

866052 is an abundant number, since it is smaller than the sum of its proper divisors (1613964).

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

866052 is an equidigital number, since it uses as much as digits as its factorization.

866052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42 (or 16 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 866052 is about 930.6191487392. The cubic root of 866052 is about 95.3194050538.

The spelling of 866052 in words is "eight hundred sixty-six thousand, fifty-two".