63318813 has 8 divisors (see below), whose sum is σ = 85581888. Its totient is φ = 41634144.

The previous prime is 63318799. The next prime is 63318841. The reversal of 63318813 is 31881336.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63318813 - 2⁵ = 63318781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63318113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144345 + ... + 144782.

It is an arithmetic number, because the mean of its divisors is an integer number (10697736).

Almost surely, 2^63318813 is an apocalyptic number.

It is an amenable number.

63318813 is a deficient number, since it is larger than the sum of its proper divisors (22263075).

63318813 is a wasteful number, since it uses less digits than its factorization.

63318813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289203.

The product of its digits is 10368, while the sum is 33.

The square root of 63318813 is about 7957.3119204917. The cubic root of 63318813 is about 398.5757955391.

The spelling of 63318813 in words is "sixty-three million, three hundred eighteen thousand, eight hundred thirteen".