868290 has 32 divisors (see below), whose sum is σ = 2111616. Its totient is φ = 228480.

The previous prime is 868277. The next prime is 868291. The reversal of 868290 is 92868.

It is not an unprimeable number, because it can be changed into a prime (868291) by changing a digit.

868290 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 15 ways as a sum of consecutive naturals, for example, 2950 + ... + 3230.

It is an arithmetic number, because the mean of its divisors is an integer number (65988).

2⁸⁶⁸²⁹⁰ is an apocalyptic number.

868290 is an abundant number, since it is smaller than the sum of its proper divisors (1243326).

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

868290 is a wasteful number, since it uses less digits than its factorization.

868290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 868290 is about 931.8207982225. The cubic root of 868290 is about 95.4014406737.

The spelling of 868290 in words is "eight hundred sixty-eight thousand, two hundred ninety".