64668707 has 2 divisors, whose sum is σ = 64668708. Its totient is φ = 64668706.

The previous prime is 64668679. The next prime is 64668727. The reversal of 64668707 is 70786646.

64668707 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 is a cyclic number.

It is not a de Polignac number, because 64668707 - 2¹⁴ = 64652323 is a prime.

It is not a weakly prime, because it can be changed into another prime (64668727) 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, 32334353 + 32334354.

It is an arithmetic number, because the mean of its divisors is an integer number (32334354).

Almost surely, 2^64668707 is an apocalyptic number.

64668707 is a deficient number, since it is larger than the sum of its proper divisors (1).

64668707 is an equidigital number, since it uses as much as digits as its factorization.

64668707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 64668707 is about 8041.6855820158. The cubic root of 64668707 is about 401.3883154591.

The spelling of 64668707 in words is "sixty-four million, six hundred sixty-eight thousand, seven hundred seven".