64796729 has 2 divisors, whose sum is σ = 64796730. Its totient is φ = 64796728.

The previous prime is 64796713. The next prime is 64796737. The reversal of 64796729 is 92769746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 18079504 = 6835^2 + 4252^2 .

It is a cyclic number.

It is not a de Polignac number, because 64796729 - 2⁴ = 64796713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64796749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32398364 + 32398365.

It is an arithmetic number, because the mean of its divisors is an integer number (32398365).

Almost surely, 2^64796729 is an apocalyptic number.

It is an amenable number.

64796729 is a deficient number, since it is larger than the sum of its proper divisors (1).

64796729 is an equidigital number, since it uses as much as digits as its factorization.

64796729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 64796729 is about 8049.6415448143. The cubic root of 64796729 is about 401.6530115554.

The spelling of 64796729 in words is "sixty-four million, seven hundred ninety-six thousand, seven hundred twenty-nine".