64321085 has 4 divisors (see below), whose sum is σ = 77185308. Its totient is φ = 51456864.

The previous prime is 64321079. The next prime is 64321141. The reversal of 64321085 is 58012346.

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 21771556 + 42549529 = 4666^2 + 6523^2 .

It is a cyclic number.

It is not a de Polignac number, because 64321085 - 2²⁰ = 63272509 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6432104 + ... + 6432113.

It is an arithmetic number, because the mean of its divisors is an integer number (19296327).

Almost surely, 2^64321085 is an apocalyptic number.

It is an amenable number.

64321085 is a deficient number, since it is larger than the sum of its proper divisors (12864223).

64321085 is a wasteful number, since it uses less digits than its factorization.

64321085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864222.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 64321085 is about 8020.0427056220. The cubic root of 64321085 is about 400.6678115323.

The spelling of 64321085 in words is "sixty-four million, three hundred twenty-one thousand, eighty-five".