64536317 has 4 divisors (see below), whose sum is σ = 64565436. Its totient is φ = 64507200.

The previous prime is 64536313. The next prime is 64536319. The reversal of 64536317 is 71363546.

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 35688676 + 28847641 = 5974^2 + 5371^2 .

It is a cyclic number.

It is not a de Polignac number, because 64536317 - 2² = 64536313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64536313) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10934 + ... + 15767.

It is an arithmetic number, because the mean of its divisors is an integer number (16141359).

Almost surely, 2^64536317 is an apocalyptic number.

It is an amenable number.

64536317 is a deficient number, since it is larger than the sum of its proper divisors (29119).

64536317 is a wasteful number, since it uses less digits than its factorization.

64536317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29118.

The product of its digits is 45360, while the sum is 35.

The square root of 64536317 is about 8033.4498815889. The cubic root of 64536317 is about 401.1142204833.

The spelling of 64536317 in words is "sixty-four million, five hundred thirty-six thousand, three hundred seventeen".