868080 has 40 divisors (see below), whose sum is σ = 2691792. Its totient is φ = 231424.

The previous prime is 868073. The next prime is 868081. The reversal of 868080 is 80868.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868081) 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, 1569 + ... + 2048.

2⁸⁶⁸⁰⁸⁰ is an apocalyptic number.

868080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

868080 is an abundant number, since it is smaller than the sum of its proper divisors (1823712).

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

868080 is a wasteful number, since it uses less digits than its factorization.

868080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 868080 is about 931.7081087980. The cubic root of 868080 is about 95.3937489586.

The spelling of 868080 in words is "eight hundred sixty-eight thousand, eighty".