864290 has 16 divisors (see below), whose sum is σ = 1778112. Its totient is φ = 296304.

The previous prime is 864289. The next prime is 864299. The reversal of 864290 is 92468.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6104 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

2⁸⁶⁴²⁹⁰ is an apocalyptic number.

864290 is an abundant number, since it is smaller than the sum of its proper divisors (913822).

It is a weird number, because it is abundant, but not a pseudoperfect number.

864290 is a wasteful number, since it uses less digits than its factorization.

864290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 864290 is about 929.6719851647. The cubic root of 864290 is about 95.2547180905.

The spelling of 864290 in words is "eight hundred sixty-four thousand, two hundred ninety".