80336689 has 2 divisors, whose sum is σ = 80336690. Its totient is φ = 80336688.

The previous prime is 80336687. The next prime is 80336749. The reversal of 80336689 is 98663308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64400625 + 15936064 = 8025^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 80336689 - 2¹ = 80336687 is a prime.

Together with 80336687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80336687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40168344 + 40168345.

It is an arithmetic number, because the mean of its divisors is an integer number (40168345).

Almost surely, 2^80336689 is an apocalyptic number.

It is an amenable number.

80336689 is a deficient number, since it is larger than the sum of its proper divisors (1).

80336689 is an equidigital number, since it uses as much as digits as its factorization.

80336689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 80336689 is about 8963.0736357569. The cubic root of 80336689 is about 431.4905706958.

The spelling of 80336689 in words is "eighty million, three hundred thirty-six thousand, six hundred eighty-nine".