64399063 has 2 divisors, whose sum is σ = 64399064. Its totient is φ = 64399062.

The previous prime is 64399061. The next prime is 64399087. The reversal of 64399063 is 36099346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64399063 - 2¹ = 64399061 is a prime.

Together with 64399061, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64399061) 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, 32199531 + 32199532.

It is an arithmetic number, because the mean of its divisors is an integer number (32199532).

Almost surely, 2^64399063 is an apocalyptic number.

64399063 is a deficient number, since it is larger than the sum of its proper divisors (1).

64399063 is an equidigital number, since it uses as much as digits as its factorization.

64399063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 64399063 is about 8024.9026785376. The cubic root of 64399063 is about 400.8296592242.

The spelling of 64399063 in words is "sixty-four million, three hundred ninety-nine thousand, sixty-three".