6661002 has 8 divisors (see below), whose sum is σ = 13322016. Its totient is φ = 2220332.

The previous prime is 6660977. The next prime is 6661013. The reversal of 6661002 is 2001666.

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

6661002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 6661002.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 555078 + ... + 555089.

It is an arithmetic number, because the mean of its divisors is an integer number (1665252).

Almost surely, 2^6661002 is an apocalyptic number.

6661002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6661002 is a wasteful number, since it uses less digits than its factorization.

6661002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110172.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6661002 is about 2580.8917063682. The cubic root of 6661002 is about 188.1538841166.

Adding to 6661002 its reverse (2001666), we get a palindrome (8662668).

The spelling of 6661002 in words is "six million, six hundred sixty-one thousand, two".