6617668 has 12 divisors (see below), whose sum is σ = 11613420. Its totient is φ = 3299552.

The previous prime is 6617627. The next prime is 6617693. The reversal of 6617668 is 8667166.

It can be written as a sum of positive squares in 2 ways, for example, as 1085764 + 5531904 = 1042^2 + 2352^2 .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 6617668.

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, 571 + ... + 3682.

It is an arithmetic number, because the mean of its divisors is an integer number (967785).

Almost surely, 2^6617668 is an apocalyptic number.

It is an amenable number.

6617668 is a deficient number, since it is larger than the sum of its proper divisors (4995752).

6617668 is a wasteful number, since it uses less digits than its factorization.

6617668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646 (or 4644 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 6617668 is about 2572.4828473675. The cubic root of 6617668 is about 187.7449763816.

The spelling of 6617668 in words is "six million, six hundred seventeen thousand, six hundred sixty-eight".