84640006 has 8 divisors (see below), whose sum is σ = 138501864. Its totient is φ = 38472720.

The previous prime is 84639967. The next prime is 84640027. The reversal of 84640006 is 60004648.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923615 + ... + 1923658.

It is an arithmetic number, because the mean of its divisors is an integer number (17312733).

Almost surely, 2^84640006 is an apocalyptic number.

84640006 is a deficient number, since it is larger than the sum of its proper divisors (53861858).

84640006 is a wasteful number, since it uses less digits than its factorization.

84640006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847286.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 84640006 is about 9200.0003260870. Note that the first 3 decimals coincide. The cubic root of 84640006 is about 439.0613703048.

The spelling of 84640006 in words is "eighty-four million, six hundred forty thousand, six".