84673217 has 2 divisors, whose sum is σ = 84673218. Its totient is φ = 84673216.

The previous prime is 84673207. The next prime is 84673219. The reversal of 84673217 is 71237648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79727041 + 4946176 = 8929^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 84673217 - 2¹⁸ = 84411073 is a prime.

Together with 84673219, 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 (84673219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42336608 + 42336609.

It is an arithmetic number, because the mean of its divisors is an integer number (42336609).

Almost surely, 2^84673217 is an apocalyptic number.

It is an amenable number.

84673217 is a deficient number, since it is larger than the sum of its proper divisors (1).

84673217 is an equidigital number, since it uses as much as digits as its factorization.

84673217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 84673217 is about 9201.8050946540. The cubic root of 84673217 is about 439.1187890169.

The spelling of 84673217 in words is "eighty-four million, six hundred seventy-three thousand, two hundred seventeen".