6668996 has 6 divisors (see below), whose sum is σ = 11670750. Its totient is φ = 3334496.

The previous prime is 6668969. The next prime is 6669007. The reversal of 6668996 is 6998666.

It can be written as a sum of positive squares in only one way, i.e., 4884100 + 1784896 = 2210^2 + 1336^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833621 + ... + 833628.

It is an arithmetic number, because the mean of its divisors is an integer number (1945125).

Almost surely, 2^6668996 is an apocalyptic number.

It is an amenable number.

6668996 is a deficient number, since it is larger than the sum of its proper divisors (5001754).

6668996 is a wasteful number, since it uses less digits than its factorization.

6668996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667253 (or 1667251 counting only the distinct ones).

The product of its digits is 839808, while the sum is 50.

The square root of 6668996 is about 2582.4399315376. The cubic root of 6668996 is about 188.2291230897.

The spelling of 6668996 in words is "six million, six hundred sixty-eight thousand, nine hundred ninety-six".