64349863 has 2 divisors, whose sum is σ = 64349864. Its totient is φ = 64349862.

The previous prime is 64349861. The next prime is 64349881. The reversal of 64349863 is 36894346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64349863 - 2¹ = 64349861 is a prime.

Together with 64349861, 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 (64349861) 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, 32174931 + 32174932.

It is an arithmetic number, because the mean of its divisors is an integer number (32174932).

Almost surely, 2^64349863 is an apocalyptic number.

64349863 is a deficient number, since it is larger than the sum of its proper divisors (1).

64349863 is an equidigital number, since it uses as much as digits as its factorization.

64349863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 64349863 is about 8021.8366350855. The cubic root of 64349863 is about 400.7275570993.

The spelling of 64349863 in words is "sixty-four million, three hundred forty-nine thousand, eight hundred sixty-three".