6651530 has 8 divisors (see below), whose sum is σ = 11972772. Its totient is φ = 2660608.

The previous prime is 6651523. The next prime is 6651571. The reversal of 6651530 is 351566.

It can be written as a sum of positive squares in 2 ways, for example, as 6651241 + 289 = 2579^2 + 17^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 6651530.

It is an unprimeable number.

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, 332567 + ... + 332586.

Almost surely, 2^6651530 is an apocalyptic number.

6651530 is a deficient number, since it is larger than the sum of its proper divisors (5321242).

6651530 is a wasteful number, since it uses less digits than its factorization.

6651530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665160.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 6651530 is about 2579.0560288602. The cubic root of 6651530 is about 188.0646563486.

The spelling of 6651530 in words is "six million, six hundred fifty-one thousand, five hundred thirty".