84008705 has 16 divisors (see below), whose sum is σ = 110312064. Its totient is φ = 60910080.

The previous prime is 84008689. The next prime is 84008723. The reversal of 84008705 is 50780048.

It is not a de Polignac number, because 84008705 - 2⁴ = 84008689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17252 + ... + 21578.

It is an arithmetic number, because the mean of its divisors is an integer number (6894504).

Almost surely, 2^84008705 is an apocalyptic number.

It is an amenable number.

84008705 is a deficient number, since it is larger than the sum of its proper divisors (26303359).

84008705 is a wasteful number, since it uses less digits than its factorization.

84008705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 84008705 is about 9165.6262742924. The cubic root of 84008705 is about 437.9670419242.

The spelling of 84008705 in words is "eighty-four million, eight thousand, seven hundred five".