6630643 has 8 divisors (see below), whose sum is σ = 6952176. Its totient is φ = 6316800.

The previous prime is 6630641. The next prime is 6630653. The reversal of 6630643 is 3460366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6630643 - 2¹ = 6630641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6630641) 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 7 ways as a sum of consecutive naturals, for example, 118 + ... + 3643.

It is an arithmetic number, because the mean of its divisors is an integer number (869022).

Almost surely, 2^6630643 is an apocalyptic number.

6630643 is a deficient number, since it is larger than the sum of its proper divisors (321533).

6630643 is a wasteful number, since it uses less digits than its factorization.

6630643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 6630643 is about 2575.0034951433. The cubic root of 6630643 is about 187.8675976610.

The spelling of 6630643 in words is "six million, six hundred thirty thousand, six hundred forty-three".