64536617 has 2 divisors, whose sum is σ = 64536618. Its totient is φ = 64536616.

The previous prime is 64536581. The next prime is 64536623. The reversal of 64536617 is 71663546.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54449641 + 10086976 = 7379^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 64536617 - 2⁶ = 64536553 is a prime.

It is not a weakly prime, because it can be changed into another prime (64536697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32268308 + 32268309.

It is an arithmetic number, because the mean of its divisors is an integer number (32268309).

Almost surely, 2^64536617 is an apocalyptic number.

It is an amenable number.

64536617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64536617 is an equidigital number, since it uses as much as digits as its factorization.

64536617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 64536617 is about 8033.4685534954. The cubic root of 64536617 is about 401.1148420149.

The spelling of 64536617 in words is "sixty-four million, five hundred thirty-six thousand, six hundred seventeen".