63900313 has 4 divisors (see below), whose sum is σ = 63919908. Its totient is φ = 63880720.

The previous prime is 63900301. The next prime is 63900323. The reversal of 63900313 is 31300936.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29888089 + 34012224 = 5467^2 + 5832^2 .

It is a cyclic number.

It is not a de Polignac number, because 63900313 - 2⁵ = 63900281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63900323) 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, 3598 + ... + 11863.

It is an arithmetic number, because the mean of its divisors is an integer number (15979977).

Almost surely, 2^63900313 is an apocalyptic number.

It is an amenable number.

63900313 is a deficient number, since it is larger than the sum of its proper divisors (19595).

63900313 is a wasteful number, since it uses less digits than its factorization.

63900313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19594.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 63900313 is about 7993.7671344617. The cubic root of 63900313 is about 399.7922108278.

The spelling of 63900313 in words is "sixty-three million, nine hundred thousand, three hundred thirteen".