80671091 has 2 divisors, whose sum is σ = 80671092. Its totient is φ = 80671090.

The previous prime is 80671061. The next prime is 80671099. The reversal of 80671091 is 19017608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80671091 - 2⁶ = 80671027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80671099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40335545 + 40335546.

It is an arithmetic number, because the mean of its divisors is an integer number (40335546).

Almost surely, 2^80671091 is an apocalyptic number.

80671091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80671091 is an equidigital number, since it uses as much as digits as its factorization.

80671091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 80671091 is about 8981.7086904442. The cubic root of 80671091 is about 432.0884360414.

Adding to 80671091 its reverse (19017608), we get a palindrome (99688699).

The spelling of 80671091 in words is "eighty million, six hundred seventy-one thousand, ninety-one".