663000000 has 392 divisors, whose sum is σ = 2500280496. Its totient is φ = 153600000.

The previous prime is 662999993. The next prime is 663000031. The reversal of 663000000 is 366.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 38999992 + ... + 39000008.

Almost surely, 2^663000000 is an apocalyptic number.

663000000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250140248).

663000000 is an abundant number, since it is smaller than the sum of its proper divisors (1837280496).

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

663000000 is an equidigital number, since it uses as much as digits as its factorization.

663000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 663000000 is about 25748.7863791675. The cubic root of 663000000 is about 871.9759553452.

Adding to 663000000 its reverse (366), we get a palindrome (663000366).

The spelling of 663000000 in words is "six hundred sixty-three million", and thus it is an aban number.