862868 has 24 divisors (see below), whose sum is σ = 1608768. Its totient is φ = 404096.

The previous prime is 862861. The next prime is 862879. The reversal of 862868 is 868268.

862868 = T₇ + T₈ + ... + T₁₇₂.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 862868.

It is not an unprimeable number, because it can be changed into a prime (862861) by changing a digit.

862868 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 7 ways as a sum of consecutive naturals, for example, 7580 + ... + 7692.

It is an arithmetic number, because the mean of its divisors is an integer number (67032).

2⁸⁶²⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

862868 is a deficient number, since it is larger than the sum of its proper divisors (745900).

862868 is a wasteful number, since it uses less digits than its factorization.

862868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 862868 is about 928.9068844615. The cubic root of 862868 is about 95.2024491520.

The spelling of 862868 in words is "eight hundred sixty-two thousand, eight hundred sixty-eight".