64597009 has 2 divisors, whose sum is σ = 64597010. Its totient is φ = 64597008.

The previous prime is 64596971. The next prime is 64597021. The reversal of 64597009 is 90079546.

64597009 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., 64448784 + 148225 = 8028^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 64597009 - 2¹¹ = 64594961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64594009) 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, 32298504 + 32298505.

It is an arithmetic number, because the mean of its divisors is an integer number (32298505).

Almost surely, 2^64597009 is an apocalyptic number.

It is an amenable number.

64597009 is a deficient number, since it is larger than the sum of its proper divisors (1).

64597009 is an equidigital number, since it uses as much as digits as its factorization.

64597009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 64597009 is about 8037.2264494663. The cubic root of 64597009 is about 401.2399212668.

The spelling of 64597009 in words is "sixty-four million, five hundred ninety-seven thousand, nine".