663116500 has 48 divisors (see below), whose sum is σ = 1458003456. Its totient is φ = 263460000.

The previous prime is 663116491. The next prime is 663116507. The reversal of 663116500 is 5611366.

663116500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663116507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71109 + ... + 79891.

It is an arithmetic number, because the mean of its divisors is an integer number (30375072).

Almost surely, 2^663116500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663116500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729001728).

663116500 is an abundant number, since it is smaller than the sum of its proper divisors (794886956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663116500 is a wasteful number, since it uses less digits than its factorization.

663116500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8953 (or 8941 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 663116500 is about 25751.0485223418. The cubic root of 663116500 is about 872.0270258577.

Adding to 663116500 its reverse (5611366), we get a palindrome (668727866).

The spelling of 663116500 in words is "six hundred sixty-three million, one hundred sixteen thousand, five hundred".