64843085 has 4 divisors (see below), whose sum is σ = 77811708. Its totient is φ = 51874464.

The previous prime is 64843081. The next prime is 64843087. The reversal of 64843085 is 58034846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 36348841 = 5338^2 + 6029^2 .

It is a cyclic number.

It is not a de Polignac number, because 64843085 - 2² = 64843081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64843081) 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 3 ways as a sum of consecutive naturals, for example, 6484304 + ... + 6484313.

It is an arithmetic number, because the mean of its divisors is an integer number (19452927).

Almost surely, 2^64843085 is an apocalyptic number.

It is an amenable number.

64843085 is a deficient number, since it is larger than the sum of its proper divisors (12968623).

64843085 is a wasteful number, since it uses less digits than its factorization.

64843085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12968622.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 64843085 is about 8052.5204128894. The cubic root of 64843085 is about 401.7487704463.

The spelling of 64843085 in words is "sixty-four million, eight hundred forty-three thousand, eighty-five".