663388110 has 256 divisors, whose sum is σ = 2336532480. Its totient is φ = 129669120.

The previous prime is 663388087. The next prime is 663388139. The reversal of 663388110 is 11883366.

663388110 is a `hidden beast` number, since 6 + 633 + 8 + 8 + 1 + 10 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 352492 + ... + 354368.

It is an arithmetic number, because the mean of its divisors is an integer number (9127080).

Almost surely, 2^663388110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663388110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168266240).

663388110 is an abundant number, since it is smaller than the sum of its proper divisors (1673144370).

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

663388110 is a wasteful number, since it uses less digits than its factorization.

663388110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 663388110 is about 25756.3217482621. The cubic root of 663388110 is about 872.1460692586.

The spelling of 663388110 in words is "six hundred sixty-three million, three hundred eighty-eight thousand, one hundred ten".