6630729 has 24 divisors (see below), whose sum is σ = 10533600. Its totient is φ = 3697344.

The previous prime is 6630709. The next prime is 6630737. The reversal of 6630729 is 9270366.

It is not a de Polignac number, because 6630729 - 2¹⁶ = 6565193 is a prime.

6630729 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6630729.

It is not an unprimeable number, because it can be changed into a prime (6630709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5797 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (438900).

Almost surely, 2^6630729 is an apocalyptic number.

It is an amenable number.

6630729 is a deficient number, since it is larger than the sum of its proper divisors (3902871).

6630729 is a wasteful number, since it uses less digits than its factorization.

6630729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 6630729 is about 2575.0201940956. The cubic root of 6630729 is about 187.8684098770.

The spelling of 6630729 in words is "six million, six hundred thirty thousand, seven hundred twenty-nine".