64536365 has 4 divisors (see below), whose sum is σ = 77443644. Its totient is φ = 51629088.

The previous prime is 64536359. The next prime is 64536371. The reversal of 64536365 is 56363546.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (64536359) and next prime (64536371).

It can be written as a sum of positive squares in 2 ways, for example, as 34975396 + 29560969 = 5914^2 + 5437^2 .

It is a cyclic number.

It is not a de Polignac number, because 64536365 - 2¹⁶ = 64470829 is a prime.

It is a Duffinian number.

It is a Curzon 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, 6453632 + ... + 6453641.

It is an arithmetic number, because the mean of its divisors is an integer number (19360911).

Almost surely, 2^64536365 is an apocalyptic number.

It is an amenable number.

64536365 is a deficient number, since it is larger than the sum of its proper divisors (12907279).

64536365 is a wasteful number, since it uses less digits than its factorization.

64536365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907278.

The product of its digits is 194400, while the sum is 38.

The square root of 64536365 is about 8033.4528690968. The cubic root of 64536365 is about 401.1143199284.

The spelling of 64536365 in words is "sixty-four million, five hundred thirty-six thousand, three hundred sixty-five".