663115523 has 8 divisors (see below), whose sum is σ = 797733120. Its totient is φ = 538469640.

The previous prime is 663115471. The next prime is 663115543. The reversal of 663115523 is 325511366.

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

It is a cyclic number.

It is not a de Polignac number, because 663115523 - 2⁸ = 663115267 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 663115523.

It is not an unprimeable number, because it can be changed into a prime (663115543) 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, 2492783 + ... + 2493048.

It is an arithmetic number, because the mean of its divisors is an integer number (99716640).

Almost surely, 2^663115523 is an apocalyptic number.

663115523 is a deficient number, since it is larger than the sum of its proper divisors (134617597).

663115523 is a wasteful number, since it uses less digits than its factorization.

663115523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985857.

The product of its digits is 16200, while the sum is 32.

The square root of 663115523 is about 25751.0295522334. The cubic root of 663115523 is about 872.0265975916.

Adding to 663115523 its reverse (325511366), we get a palindrome (988626889).

The spelling of 663115523 in words is "six hundred sixty-three million, one hundred fifteen thousand, five hundred twenty-three".