84086666 has 48 divisors (see below), whose sum is σ = 143337600. Its totient is φ = 36869184.

The previous prime is 84086659. The next prime is 84086669. The reversal of 84086666 is 66668048.

It is not an unprimeable number, because it can be changed into a prime (84086669) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 944750 + ... + 944838.

It is an arithmetic number, because the mean of its divisors is an integer number (2986200).

Almost surely, 2^84086666 is an apocalyptic number.

84086666 is a deficient number, since it is larger than the sum of its proper divisors (59250934).

84086666 is a wasteful number, since it uses less digits than its factorization.

84086666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 84086666 is about 9169.8781889401. The cubic root of 84086666 is about 438.1024794438.

The spelling of 84086666 in words is "eighty-four million, eighty-six thousand, six hundred sixty-six".