64565236 has 12 divisors (see below), whose sum is σ = 115121412. Its totient is φ = 31673408.

The previous prime is 64565233. The next prime is 64565239. The reversal of 64565236 is 63256546.

It is an interprime number because it is at equal distance from previous prime (64565233) and next prime (64565239).

It can be written as a sum of positive squares in 2 ways, for example, as 34928100 + 29637136 = 5910^2 + 5444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64565195 and 64565204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64565233) 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, 152065 + ... + 152488.

It is an arithmetic number, because the mean of its divisors is an integer number (9593451).

Almost surely, 2^64565236 is an apocalyptic number.

It is an amenable number.

64565236 is a deficient number, since it is larger than the sum of its proper divisors (50556176).

64565236 is a wasteful number, since it uses less digits than its factorization.

64565236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304610 (or 304608 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 64565236 is about 8035.2495916431. The cubic root of 64565236 is about 401.1741252029.

The spelling of 64565236 in words is "sixty-four million, five hundred sixty-five thousand, two hundred thirty-six".