80636411 has 2 divisors, whose sum is σ = 80636412. Its totient is φ = 80636410.

The previous prime is 80636401. The next prime is 80636429. The reversal of 80636411 is 11463608.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80636411 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (80636401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40318205 + 40318206.

It is an arithmetic number, because the mean of its divisors is an integer number (40318206).

Almost surely, 2^80636411 is an apocalyptic number.

80636411 is a deficient number, since it is larger than the sum of its proper divisors (1).

80636411 is an equidigital number, since it uses as much as digits as its factorization.

80636411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 80636411 is about 8979.7778925762. Note that the first 3 decimals coincide. The cubic root of 80636411 is about 432.0265097901.

The spelling of 80636411 in words is "eighty million, six hundred thirty-six thousand, four hundred eleven".