6994664 has 16 divisors (see below), whose sum is σ = 13200900. Its totient is φ = 3474432.

The previous prime is 6994661. The next prime is 6994693. The reversal of 6994664 is 4664996.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 532900 = 2542^2 + 730^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 6 + 9 + 9⁷ + 4⁹ + 6⁵ + 6⁸ + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (6994661) by changing a digit.

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, 1529 + ... + 4040.

Almost surely, 2^6994664 is an apocalyptic number.

It is an amenable number.

6994664 is a deficient number, since it is larger than the sum of its proper divisors (6206236).

6994664 is a wasteful number, since it uses less digits than its factorization.

6994664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732 (or 5728 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 6994664 is about 2644.7427096033. The cubic root of 6994664 is about 191.2444992508.

The spelling of 6994664 in words is "six million, nine hundred ninety-four thousand, six hundred sixty-four".