1330663 has 4 divisors (see below), whose sum is σ = 1336608. Its totient is φ = 1324720.

The previous prime is 1330649. The next prime is 1330691. The reversal of 1330663 is 3660331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1330663 - 2¹³ = 1322471 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (334152).

2^1330663 is an apocalyptic number.

1330663 is a deficient number, since it is larger than the sum of its proper divisors (5945).

1330663 is an equidigital number, since it uses as much as digits as its factorization.

1330663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 1330663 is about 1153.5436706081. The cubic root of 1330663 is about 109.9907154698.

Adding to 1330663 its reverse (3660331), we get a palindrome (4990994).

The spelling of 1330663 in words is "one million, three hundred thirty thousand, six hundred sixty-three".