64805085 has 48 divisors (see below), whose sum is σ = 116385984. Its totient is φ = 33336576.

The previous prime is 64805033. The next prime is 64805087. The reversal of 64805085 is 58050846.

It is a happy number.

64805085 is a `hidden beast` number, since 648 + 0 + 5 + 0 + 8 + 5 = 666.

It is not a de Polignac number, because 64805085 - 2⁸ = 64804829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64805087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206889 + ... + 207201.

It is an arithmetic number, because the mean of its divisors is an integer number (2424708).

Almost surely, 2^64805085 is an apocalyptic number.

It is an amenable number.

64805085 is a deficient number, since it is larger than the sum of its proper divisors (51580899).

64805085 is a wasteful number, since it uses less digits than its factorization.

64805085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 64805085 is about 8050.1605574051. The cubic root of 64805085 is about 401.6702761527.

The spelling of 64805085 in words is "sixty-four million, eight hundred five thousand, eighty-five".