663660330 has 16 divisors (see below), whose sum is σ = 1592784864. Its totient is φ = 176976080.

The previous prime is 663660313. The next prime is 663660341. The reversal of 663660330 is 33066366.

It is a junction number, because it is equal to n+sod(n) for n = 663660291 and 663660300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11060976 + ... + 11061035.

It is an arithmetic number, because the mean of its divisors is an integer number (99549054).

Almost surely, 2^663660330 is an apocalyptic number.

663660330 is an abundant number, since it is smaller than the sum of its proper divisors (929124534).

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

663660330 is a wasteful number, since it uses less digits than its factorization.

663660330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22122021.

The product of its (nonzero) digits is 34992, while the sum is 33.

The square root of 663660330 is about 25761.6057341153. The cubic root of 663660330 is about 872.2653474169.

It can be divided in two parts, 6636 and 60330, that added together give a palindrome (66966).

The spelling of 663660330 in words is "six hundred sixty-three million, six hundred sixty thousand, three hundred thirty".