6630529 has 4 divisors (see below), whose sum is σ = 6646276. Its totient is φ = 6614784.

The previous prime is 6630523. The next prime is 6630539. The reversal of 6630529 is 9250366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9250366 = 2 ⋅4625183.

It can be written as a sum of positive squares in 2 ways, for example, as 204304 + 6426225 = 452^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 6630529 - 2¹⁹ = 6106241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6630529.

It is not an unprimeable number, because it can be changed into a prime (6630523) 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, 7224 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (1661569).

Almost surely, 2^6630529 is an apocalyptic number.

It is an amenable number.

6630529 is a deficient number, since it is larger than the sum of its proper divisors (15747).

6630529 is a wasteful number, since it uses less digits than its factorization.

6630529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15746.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 6630529 is about 2574.9813591558. The cubic root of 6630529 is about 187.8665209917.

The spelling of 6630529 in words is "six million, six hundred thirty thousand, five hundred twenty-nine".