64565143 has 2 divisors, whose sum is σ = 64565144. Its totient is φ = 64565142.

The previous prime is 64565141. The next prime is 64565161. The reversal of 64565143 is 34156546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64565143 - 2¹ = 64565141 is a prime.

It is a super-2 number, since 2×64565143² = 8337315381220898, which contains 22 as substring.

Together with 64565141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 64565099 and 64565108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64565141) 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 as a sum of consecutive naturals, namely, 32282571 + 32282572.

It is an arithmetic number, because the mean of its divisors is an integer number (32282572).

Almost surely, 2^64565143 is an apocalyptic number.

64565143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64565143 is an equidigital number, since it uses as much as digits as its factorization.

64565143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 64565143 is about 8035.2438046397. The cubic root of 64565143 is about 401.1739325853.

The spelling of 64565143 in words is "sixty-four million, five hundred sixty-five thousand, one hundred forty-three".