84320638 has 8 divisors (see below), whose sum is σ = 127238832. Its totient is φ = 41907696.

The previous prime is 84320627. The next prime is 84320659. The reversal of 84320638 is 83602348.

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 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, 125895 + ... + 126562.

It is an arithmetic number, because the mean of its divisors is an integer number (15904854).

Almost surely, 2^84320638 is an apocalyptic number.

84320638 is a deficient number, since it is larger than the sum of its proper divisors (42918194).

84320638 is a wasteful number, since it uses less digits than its factorization.

84320638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252626.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 84320638 is about 9182.6269661791. The cubic root of 84320638 is about 438.5084446713.

The spelling of 84320638 in words is "eighty-four million, three hundred twenty thousand, six hundred thirty-eight".