84315805 has 8 divisors (see below), whose sum is σ = 115633152. Its totient is φ = 57816528.

The previous prime is 84315761. The next prime is 84315809. The reversal of 84315805 is 50851348.

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

It is not a de Polignac number, because 84315805 - 2²³ = 75927197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84315809) 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 7 ways as a sum of consecutive naturals, for example, 1204477 + ... + 1204546.

It is an arithmetic number, because the mean of its divisors is an integer number (14454144).

Almost surely, 2^84315805 is an apocalyptic number.

It is an amenable number.

84315805 is a deficient number, since it is larger than the sum of its proper divisors (31317347).

84315805 is a wasteful number, since it uses less digits than its factorization.

84315805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409035.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 84315805 is about 9182.3638024204. The cubic root of 84315805 is about 438.5000665255.

The spelling of 84315805 in words is "eighty-four million, three hundred fifteen thousand, eight hundred five".