84356666 has 8 divisors (see below), whose sum is σ = 128679840. Its totient is φ = 41463388.

The previous prime is 84356653. The next prime is 84356687. The reversal of 84356666 is 66665348.

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

It is a Curzon number.

It is an unprimeable number.

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, 357326 + ... + 357561.

It is an arithmetic number, because the mean of its divisors is an integer number (16084980).

Almost surely, 2^84356666 is an apocalyptic number.

84356666 is a deficient number, since it is larger than the sum of its proper divisors (44323174).

84356666 is a wasteful number, since it uses less digits than its factorization.

84356666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714948.

The product of its digits is 622080, while the sum is 44.

The square root of 84356666 is about 9184.5885046637. The cubic root of 84356666 is about 438.5708901692.

It can be divided in two parts, 8435 and 6666, that multiplied together give a triangular number (56227710 = T₁₀₆₀₄).

The spelling of 84356666 in words is "eighty-four million, three hundred fifty-six thousand, six hundred sixty-six".