80878668 has 72 divisors (see below), whose sum is σ = 215208000. Its totient is φ = 23564736.

The previous prime is 80878643. The next prime is 80878723. The reversal of 80878668 is 86687808.

It is a self number, because there is not a number n which added to its sum of digits gives 80878668.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37483 + ... + 39581.

It is an arithmetic number, because the mean of its divisors is an integer number (2989000).

Almost surely, 2^80878668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80878668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107604000).

80878668 is an abundant number, since it is smaller than the sum of its proper divisors (134329332).

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

80878668 is a wasteful number, since it uses less digits than its factorization.

80878668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 80878668 is about 8993.2568071861. The cubic root of 80878668 is about 432.4587248303.

The spelling of 80878668 in words is "eighty million, eight hundred seventy-eight thousand, six hundred sixty-eight".