80811886 has 8 divisors (see below), whose sum is σ = 121354200. Its totient is φ = 40360488.

The previous prime is 80811869. The next prime is 80811889. The reversal of 80811886 is 68811808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80811889) 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, 20461 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (15169275).

Almost surely, 2^80811886 is an apocalyptic number.

80811886 is a deficient number, since it is larger than the sum of its proper divisors (40542314).

80811886 is a wasteful number, since it uses less digits than its factorization.

80811886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45458.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 80811886 is about 8989.5431474575. The cubic root of 80811886 is about 432.3396641358.

The spelling of 80811886 in words is "eighty million, eight hundred eleven thousand, eight hundred eighty-six".