64513069 has 2 divisors, whose sum is σ = 64513070. Its totient is φ = 64513068.

The previous prime is 64513021. The next prime is 64513073. The reversal of 64513069 is 96031546.

64513069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 20820969 = 6610^2 + 4563^2 .

It is a cyclic number.

It is not a de Polignac number, because 64513069 - 2¹⁵ = 64480301 is a prime.

It is a super-2 number, since 2×64513069² = 8323872143597522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64513769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32256534 + 32256535.

It is an arithmetic number, because the mean of its divisors is an integer number (32256535).

Almost surely, 2^64513069 is an apocalyptic number.

It is an amenable number.

64513069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64513069 is an equidigital number, since it uses as much as digits as its factorization.

64513069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 64513069 is about 8032.0028012943. The cubic root of 64513069 is about 401.0660500691.

The spelling of 64513069 in words is "sixty-four million, five hundred thirteen thousand, sixty-nine".