80889617 has 2 divisors, whose sum is σ = 80889618. Its totient is φ = 80889616.

The previous prime is 80889583. The next prime is 80889619. The reversal of 80889617 is 71698808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68492176 + 12397441 = 8276^2 + 3521^2 .

It is a cyclic number.

It is not a de Polignac number, because 80889617 - 2²⁴ = 64112401 is a prime.

Together with 80889619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80889619) 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, 40444808 + 40444809.

It is an arithmetic number, because the mean of its divisors is an integer number (40444809).

Almost surely, 2^80889617 is an apocalyptic number.

It is an amenable number.

80889617 is a deficient number, since it is larger than the sum of its proper divisors (1).

80889617 is an equidigital number, since it uses as much as digits as its factorization.

80889617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 80889617 is about 8993.8655204534. The cubic root of 80889617 is about 432.4782387394.

The spelling of 80889617 in words is "eighty million, eight hundred eighty-nine thousand, six hundred seventeen".