64660049 has 2 divisors, whose sum is σ = 64660050. Its totient is φ = 64660048.

The previous prime is 64660039. The next prime is 64660051. The reversal of 64660049 is 94006646.

64660049 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., 46444225 + 18215824 = 6815^2 + 4268^2 .

It is a cyclic number.

It is not a de Polignac number, because 64660049 - 2²⁴ = 47882833 is a prime.

Together with 64660051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64660009) 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, 32330024 + 32330025.

It is an arithmetic number, because the mean of its divisors is an integer number (32330025).

Almost surely, 2^64660049 is an apocalyptic number.

It is an amenable number.

64660049 is a deficient number, since it is larger than the sum of its proper divisors (1).

64660049 is an equidigital number, since it uses as much as digits as its factorization.

64660049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64660049 is about 8041.1472440194. The cubic root of 64660049 is about 401.3704017195.

The spelling of 64660049 in words is "sixty-four million, six hundred sixty thousand, forty-nine".