80868740 has 12 divisors (see below), whose sum is σ = 169824396. Its totient is φ = 32347488.

The previous prime is 80868727. The next prime is 80868761. The reversal of 80868740 is 4786808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9229444 + 71639296 = 3038^2 + 8464^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021699 + ... + 2021738.

It is an arithmetic number, because the mean of its divisors is an integer number (14152033).

Almost surely, 2^80868740 is an apocalyptic number.

It is an amenable number.

80868740 is an abundant number, since it is smaller than the sum of its proper divisors (88955656).

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

80868740 is a wasteful number, since it uses less digits than its factorization.

80868740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043446 (or 4043444 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 80868740 is about 8992.7048211314. The cubic root of 80868740 is about 432.4410290809.

The spelling of 80868740 in words is "eighty million, eight hundred sixty-eight thousand, seven hundred forty".