868212 has 24 divisors (see below), whose sum is σ = 2251200. Its totient is φ = 289368.

The previous prime is 868211. The next prime is 868229. The reversal of 868212 is 212868.

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

It is a plaindrome in base 15.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (93800).

2⁸⁶⁸²¹² is an apocalyptic number.

It is an amenable number.

868212 is an abundant number, since it is smaller than the sum of its proper divisors (1382988).

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

868212 is a wasteful number, since it uses less digits than its factorization.

868212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052 (or 8044 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 868212 is about 931.7789437415. The cubic root of 868212 is about 95.3985838958.

The spelling of 868212 in words is "eight hundred sixty-eight thousand, two hundred twelve".