80736881 has 2 divisors, whose sum is σ = 80736882. Its totient is φ = 80736880.

The previous prime is 80736847. The next prime is 80736889. The reversal of 80736881 is 18863708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71250481 + 9486400 = 8441^2 + 3080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80736881 is a prime.

It is a super-2 number, since 2×80736881² = 13036887907216322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80736889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40368440 + 40368441.

It is an arithmetic number, because the mean of its divisors is an integer number (40368441).

Almost surely, 2^80736881 is an apocalyptic number.

It is an amenable number.

80736881 is a deficient number, since it is larger than the sum of its proper divisors (1).

80736881 is an equidigital number, since it uses as much as digits as its factorization.

80736881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 80736881 is about 8985.3703874687. The cubic root of 80736881 is about 432.2058650303.

The spelling of 80736881 in words is "eighty million, seven hundred thirty-six thousand, eight hundred eighty-one".