868880 has 20 divisors (see below), whose sum is σ = 2020332. Its totient is φ = 347520.

The previous prime is 868877. The next prime is 868883. The reversal of 868880 is 88868.

It is an interprime number because it is at equal distance from previous prime (868877) and next prime (868883).

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 541696 = 572^2 + 736^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (868883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5351 + ... + 5510.

2⁸⁶⁸⁸⁸⁰ is an apocalyptic number.

868880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

868880 is an abundant number, since it is smaller than the sum of its proper divisors (1151452).

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

868880 is a wasteful number, since it uses less digits than its factorization.

868880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10874 (or 10868 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 868880 is about 932.1373289382. The cubic root of 868880 is about 95.4230440957.

The spelling of 868880 in words is "eight hundred sixty-eight thousand, eight hundred eighty".