63813243 has 8 divisors (see below), whose sum is σ = 91629328. Its totient is φ = 39269664.

The previous prime is 63813241. The next prime is 63813251. The reversal of 63813243 is 34231836.

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

It is not a de Polignac number, because 63813243 - 2¹ = 63813241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63813243.

It is not an unprimeable number, because it can be changed into a prime (63813241) 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, 818080 + ... + 818157.

It is an arithmetic number, because the mean of its divisors is an integer number (11453666).

Almost surely, 2^63813243 is an apocalyptic number.

63813243 is a deficient number, since it is larger than the sum of its proper divisors (27816085).

63813243 is a wasteful number, since it uses less digits than its factorization.

63813243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636253.

The product of its digits is 10368, while the sum is 30.

The square root of 63813243 is about 7988.3191598734. The cubic root of 63813243 is about 399.6105438495.

The spelling of 63813243 in words is "sixty-three million, eight hundred thirteen thousand, two hundred forty-three".