80808866 has 4 divisors (see below), whose sum is σ = 121213302. Its totient is φ = 40404432.

The previous prime is 80808859. The next prime is 80808869. The reversal of 80808866 is 66880808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 17048641 = 7985^2 + 4129^2 .

It is a super-3 number, since 3×80808866³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80808869) by changing a digit.

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 as a sum of consecutive naturals, namely, 20202215 + ... + 20202218.

Almost surely, 2^80808866 is an apocalyptic number.

80808866 is a deficient number, since it is larger than the sum of its proper divisors (40404436).

80808866 is a wasteful number, since it uses less digits than its factorization.

80808866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40404435.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 80808866 is about 8989.3751729472. The cubic root of 80808866 is about 432.3342784510.

The spelling of 80808866 in words is "eighty million, eight hundred eight thousand, eight hundred sixty-six".