6660002 has 8 divisors (see below), whose sum is σ = 10057500. Its totient is φ = 3307504.

The previous prime is 6659977. The next prime is 6660011. The reversal of 6660002 is 2000666.

It can be written as a sum of positive squares in 2 ways, for example, as 5621641 + 1038361 = 2371^2 + 1019^2 .

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

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, 10877 + ... + 11472.

Almost surely, 2^6660002 is an apocalyptic number.

6660002 is a deficient number, since it is larger than the sum of its proper divisors (3397498).

6660002 is a wasteful number, since it uses less digits than its factorization.

6660002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22500.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 6660002 is about 2580.6979676049. The cubic root of 6660002 is about 188.1444679507.

Adding to 6660002 its reverse (2000666), we get a palindrome (8660668).

The spelling of 6660002 in words is "six million, six hundred sixty thousand, two".