64519907 has 2 divisors, whose sum is σ = 64519908. Its totient is φ = 64519906.

The previous prime is 64519843. The next prime is 64519933. The reversal of 64519907 is 70991546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64519907 - 2⁶ = 64519843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64519957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32259953 + 32259954.

It is an arithmetic number, because the mean of its divisors is an integer number (32259954).

Almost surely, 2^64519907 is an apocalyptic number.

64519907 is a deficient number, since it is larger than the sum of its proper divisors (1).

64519907 is an equidigital number, since it uses as much as digits as its factorization.

64519907 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 41.

The square root of 64519907 is about 8032.4284621775. The cubic root of 64519907 is about 401.0802197704.

The spelling of 64519907 in words is "sixty-four million, five hundred nineteen thousand, nine hundred seven".