1006663443 has 4 divisors (see below), whose sum is σ = 1342217928. Its totient is φ = 671108960.

The previous prime is 1006663391. The next prime is 1006663451. The reversal of 1006663443 is 3443666001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006663443 is a prime.

It is a super-2 number, since 2×1006663443² = 2026742574945228498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1006663843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167777238 + ... + 167777243.

It is an arithmetic number, because the mean of its divisors is an integer number (335554482).

Almost surely, 2^1006663443 is an apocalyptic number.

1006663443 is a deficient number, since it is larger than the sum of its proper divisors (335554485).

1006663443 is an equidigital number, since it uses as much as digits as its factorization.

1006663443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335554484.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 1006663443 is about 31727.9599564800. The cubic root of 1006663443 is about 1002.2162323523.

The spelling of 1006663443 in words is "one billion, six million, six hundred sixty-three thousand, four hundred forty-three".