84975811 has 2 divisors, whose sum is σ = 84975812. Its totient is φ = 84975810.

The previous prime is 84975773. The next prime is 84975833. The reversal of 84975811 is 11857948.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84975811 - 2¹⁵ = 84943043 is a prime.

It is not a weakly prime, because it can be changed into another prime (84975841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42487905 + 42487906.

It is an arithmetic number, because the mean of its divisors is an integer number (42487906).

Almost surely, 2^84975811 is an apocalyptic number.

84975811 is a deficient number, since it is larger than the sum of its proper divisors (1).

84975811 is an equidigital number, since it uses as much as digits as its factorization.

84975811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 43.

The square root of 84975811 is about 9218.2325312394. The cubic root of 84975811 is about 439.6412554498.

The spelling of 84975811 in words is "eighty-four million, nine hundred seventy-five thousand, eight hundred eleven".