64316263 has 4 divisors (see below), whose sum is σ = 70163208. Its totient is φ = 58469320.

The previous prime is 64316251. The next prime is 64316269. The reversal of 64316263 is 36261346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64316263 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 (64316269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2923456 + ... + 2923477.

It is an arithmetic number, because the mean of its divisors is an integer number (17540802).

Almost surely, 2^64316263 is an apocalyptic number.

64316263 is a deficient number, since it is larger than the sum of its proper divisors (5846945).

64316263 is a wasteful number, since it uses less digits than its factorization.

64316263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846944.

The product of its digits is 15552, while the sum is 31.

The square root of 64316263 is about 8019.7420781469. The cubic root of 64316263 is about 400.6577989085.

The spelling of 64316263 in words is "sixty-four million, three hundred sixteen thousand, two hundred sixty-three".