65005885 has 16 divisors (see below), whose sum is σ = 89283456. Its totient is φ = 44509248.

The previous prime is 65005873. The next prime is 65005901. The reversal of 65005885 is 58850056.

It is a happy number.

It is not a de Polignac number, because 65005885 - 2⁷ = 65005757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39907 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (5580216).

Almost surely, 2^65005885 is an apocalyptic number.

It is an amenable number.

65005885 is a deficient number, since it is larger than the sum of its proper divisors (24277571).

65005885 is a wasteful number, since it uses less digits than its factorization.

65005885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 65005885 is about 8062.6227122444. The cubic root of 65005885 is about 402.0847098369.

The spelling of 65005885 in words is "sixty-five million, five thousand, eight hundred eighty-five".