84108687 has 32 divisors (see below), whose sum is σ = 127948800. Its totient is φ = 48719232.

The previous prime is 84108683. The next prime is 84108697. The reversal of 84108687 is 78680148.

It is not a de Polignac number, because 84108687 - 2² = 84108683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84108683) 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 in 31 ways as a sum of consecutive naturals, for example, 164989 + ... + 165497.

It is an arithmetic number, because the mean of its divisors is an integer number (3998400).

Almost surely, 2^84108687 is an apocalyptic number.

84108687 is a deficient number, since it is larger than the sum of its proper divisors (43840113).

84108687 is a wasteful number, since it uses less digits than its factorization.

84108687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 84108687 is about 9171.0788351208. The cubic root of 84108687 is about 438.1407201983.

The spelling of 84108687 in words is "eighty-four million, one hundred eight thousand, six hundred eighty-seven".