6696647 has 4 divisors (see below), whose sum is σ = 6726120. Its totient is φ = 6667176.

The previous prime is 6696643. The next prime is 6696661. The reversal of 6696647 is 7466966.

6696647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6696647 - 2² = 6696643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6696598 and 6696607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6696643) 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, 14393 + ... + 14850.

It is an arithmetic number, because the mean of its divisors is an integer number (1681530).

Almost surely, 2^6696647 is an apocalyptic number.

6696647 is a deficient number, since it is larger than the sum of its proper divisors (29473).

6696647 is a wasteful number, since it uses less digits than its factorization.

6696647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29472.

The product of its digits is 326592, while the sum is 44.

The square root of 6696647 is about 2587.7880515993. The cubic root of 6696647 is about 188.4889096567.

The spelling of 6696647 in words is "six million, six hundred ninety-six thousand, six hundred forty-seven".