80866138 has 8 divisors (see below), whose sum is σ = 122834880. Its totient is φ = 39921180.

The previous prime is 80866133. The next prime is 80866139. The reversal of 80866138 is 83166808.

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

It is a self number, because there is not a number n which added to its sum of digits gives 80866138.

It is not an unprimeable number, because it can be changed into a prime (80866133) 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, 255748 + ... + 256063.

It is an arithmetic number, because the mean of its divisors is an integer number (15354360).

Almost surely, 2^80866138 is an apocalyptic number.

80866138 is a deficient number, since it is larger than the sum of its proper divisors (41968742).

80866138 is a wasteful number, since it uses less digits than its factorization.

80866138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511892.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 80866138 is about 8992.5601471439. The cubic root of 80866138 is about 432.4363910151.

The spelling of 80866138 in words is "eighty million, eight hundred sixty-six thousand, one hundred thirty-eight".