80981266 has 8 divisors (see below), whose sum is σ = 121678524. Its totient is φ = 40421760.

The previous prime is 80981239. The next prime is 80981267. The reversal of 80981266 is 66218908.

It can be written as a sum of positive squares in 2 ways, for example, as 79834225 + 1147041 = 8935^2 + 1071^2 .

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

It is not an unprimeable number, because it can be changed into a prime (80981267) by changing a digit.

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, 32955 + ... + 35326.

Almost surely, 2^80981266 is an apocalyptic number.

80981266 is a deficient number, since it is larger than the sum of its proper divisors (40697258).

80981266 is a wasteful number, since it uses less digits than its factorization.

80981266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68876.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 80981266 is about 8998.9591620365. The cubic root of 80981266 is about 432.6415116024.

The spelling of 80981266 in words is "eighty million, nine hundred eighty-one thousand, two hundred sixty-six".