84518663 has 2 divisors, whose sum is σ = 84518664. Its totient is φ = 84518662.

The previous prime is 84518647. The next prime is 84518677. The reversal of 84518663 is 36681548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84518663 - 2⁴ = 84518647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84518663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84518563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42259331 + 42259332.

It is an arithmetic number, because the mean of its divisors is an integer number (42259332).

Almost surely, 2^84518663 is an apocalyptic number.

84518663 is a deficient number, since it is larger than the sum of its proper divisors (1).

84518663 is an equidigital number, since it uses as much as digits as its factorization.

84518663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 84518663 is about 9193.4032327534. The cubic root of 84518663 is about 438.8514518252.

The spelling of 84518663 in words is "eighty-four million, five hundred eighteen thousand, six hundred sixty-three".