64313663 has 4 divisors (see below), whose sum is σ = 65127840. Its totient is φ = 63499488.

The previous prime is 64313653. The next prime is 64313701. The reversal of 64313663 is 36631346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36631346 = 2 ⋅18315673.

It is a cyclic number.

It is not a de Polignac number, because 64313663 - 2⁸ = 64313407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64313633) 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 in 3 ways as a sum of consecutive naturals, for example, 406970 + ... + 407127.

It is an arithmetic number, because the mean of its divisors is an integer number (16281960).

Almost surely, 2^64313663 is an apocalyptic number.

64313663 is a deficient number, since it is larger than the sum of its proper divisors (814177).

64313663 is an equidigital number, since it uses as much as digits as its factorization.

64313663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814176.

The product of its digits is 23328, while the sum is 32.

The square root of 64313663 is about 8019.5799765324. The cubic root of 64313663 is about 400.6523999406.

The spelling of 64313663 in words is "sixty-four million, three hundred thirteen thousand, six hundred sixty-three".