84676817 has 2 divisors, whose sum is σ = 84676818. Its totient is φ = 84676816.

The previous prime is 84676799. The next prime is 84676819. The reversal of 84676817 is 71867648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45751696 + 38925121 = 6764^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 84676817 - 2⁸ = 84676561 is a prime.

Together with 84676819, 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 (84676819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42338408 + 42338409.

It is an arithmetic number, because the mean of its divisors is an integer number (42338409).

Almost surely, 2^84676817 is an apocalyptic number.

It is an amenable number.

84676817 is a deficient number, since it is larger than the sum of its proper divisors (1).

84676817 is an equidigital number, since it uses as much as digits as its factorization.

84676817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 47.

The square root of 84676817 is about 9202.0007063682. Note that the first 3 decimals coincide. The cubic root of 84676817 is about 439.1250121781.

The spelling of 84676817 in words is "eighty-four million, six hundred seventy-six thousand, eight hundred seventeen".