663888130 has 16 divisors (see below), whose sum is σ = 1195888824. Its totient is φ = 265357440.

The previous prime is 663888103. The next prime is 663888133. The reversal of 663888130 is 31888366.

It can be written as a sum of positive squares in 4 ways, for example, as 592873801 + 71014329 = 24349^2 + 8427^2 .

It is not an unprimeable number, because it can be changed into a prime (663888133) 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, 10227 + ... + 37846.

Almost surely, 2^663888130 is an apocalyptic number.

663888130 is a deficient number, since it is larger than the sum of its proper divisors (532000694).

663888130 is a wasteful number, since it uses less digits than its factorization.

663888130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49461.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 663888130 is about 25766.0266630305. The cubic root of 663888130 is about 872.3651370767.

The spelling of 663888130 in words is "six hundred sixty-three million, eight hundred eighty-eight thousand, one hundred thirty".