868289 has 8 divisors (see below), whose sum is σ = 912000. Its totient is φ = 825552.

The previous prime is 868277. The next prime is 868291. The reversal of 868289 is 982868.

868289 = T₁₀₇ + T₁₀₈ + ... + T₁₈₅.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868289 - 2⁸ = 868033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102 + ... + 2480.

It is an arithmetic number, because the mean of its divisors is an integer number (114000).

2⁸⁶⁸²⁸⁹ is an apocalyptic number.

It is an amenable number.

868289 is a deficient number, since it is larger than the sum of its proper divisors (43711).

868289 is a wasteful number, since it uses less digits than its factorization.

868289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its digits is 55296, while the sum is 41.

The square root of 868289 is about 931.8202616385. The cubic root of 868289 is about 95.4014040494.

The spelling of 868289 in words is "eight hundred sixty-eight thousand, two hundred eighty-nine".