84612317 has 2 divisors, whose sum is σ = 84612318. Its totient is φ = 84612316.

The previous prime is 84612293. The next prime is 84612371. The reversal of 84612317 is 71321648.

Together with next prime (84612371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77246521 + 7365796 = 8789^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 84612317 - 2⁸ = 84612061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84612817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42306158 + 42306159.

It is an arithmetic number, because the mean of its divisors is an integer number (42306159).

Almost surely, 2^84612317 is an apocalyptic number.

It is an amenable number.

84612317 is a deficient number, since it is larger than the sum of its proper divisors (1).

84612317 is an equidigital number, since it uses as much as digits as its factorization.

84612317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 84612317 is about 9198.4953660911. The cubic root of 84612317 is about 439.0134871315.

The spelling of 84612317 in words is "eighty-four million, six hundred twelve thousand, three hundred seventeen".