663606466 has 4 divisors (see below), whose sum is σ = 995409702. Its totient is φ = 331803232.

The previous prime is 663606457. The next prime is 663606499. The reversal of 663606466 is 664606366.

663606466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 651321441 + 12285025 = 25521^2 + 3505^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165901615 + ... + 165901618.

Almost surely, 2^663606466 is an apocalyptic number.

663606466 is a deficient number, since it is larger than the sum of its proper divisors (331803236).

663606466 is a wasteful number, since it uses less digits than its factorization.

663606466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331803235.

The product of its (nonzero) digits is 559872, while the sum is 43.

The square root of 663606466 is about 25760.5602811740. The cubic root of 663606466 is about 872.2417485116.

The spelling of 663606466 in words is "six hundred sixty-three million, six hundred six thousand, four hundred sixty-six".