84791666 has 8 divisors (see below), whose sum is σ = 129893760. Its totient is φ = 41493748.

The previous prime is 84791653. The next prime is 84791669. The reversal of 84791666 is 66619748.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 84791666.

It is not an unprimeable number, because it can be changed into a prime (84791669) 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 3 ways as a sum of consecutive naturals, for example, 450926 + ... + 451113.

It is an arithmetic number, because the mean of its divisors is an integer number (16236720).

Almost surely, 2^84791666 is an apocalyptic number.

84791666 is a deficient number, since it is larger than the sum of its proper divisors (45102094).

84791666 is a wasteful number, since it uses less digits than its factorization.

84791666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902088.

The product of its digits is 435456, while the sum is 47.

The square root of 84791666 is about 9208.2390281747. The cubic root of 84791666 is about 439.3234540748.

The spelling of 84791666 in words is "eighty-four million, seven hundred ninety-one thousand, six hundred sixty-six".