64405063 has 2 divisors, whose sum is σ = 64405064. Its totient is φ = 64405062.

The previous prime is 64405057. The next prime is 64405067. The reversal of 64405063 is 36050446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64405063 - 2⁵ = 64405031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64405067) 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, 32202531 + 32202532.

It is an arithmetic number, because the mean of its divisors is an integer number (32202532).

Almost surely, 2^64405063 is an apocalyptic number.

64405063 is a deficient number, since it is larger than the sum of its proper divisors (1).

64405063 is an equidigital number, since it uses as much as digits as its factorization.

64405063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64405063 is about 8025.2765061398. The cubic root of 64405063 is about 400.8421071448.

The spelling of 64405063 in words is "sixty-four million, four hundred five thousand, sixty-three".