84004065 has 12 divisors (see below), whose sum is σ = 145607124. Its totient is φ = 44802144.

The previous prime is 84004033. The next prime is 84004117. The reversal of 84004065 is 56040048.

It can be written as a sum of positive squares in 2 ways, for example, as 13242321 + 70761744 = 3639^2 + 8412^2 .

It is not a de Polignac number, because 84004065 - 2⁵ = 84004033 is a prime.

84004065 is a modest number, since divided by 4065 gives 840 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933334 + ... + 933423.

It is an arithmetic number, because the mean of its divisors is an integer number (12133927).

Almost surely, 2^84004065 is an apocalyptic number.

It is an amenable number.

84004065 is a deficient number, since it is larger than the sum of its proper divisors (61603059).

84004065 is a wasteful number, since it uses less digits than its factorization.

84004065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866768 (or 1866765 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 84004065 is about 9165.3731511597. The cubic root of 84004065 is about 437.9589784563.

The spelling of 84004065 in words is "eighty-four million, four thousand, sixty-five".