6691327 has 4 divisors (see below), whose sum is σ = 6697080. Its totient is φ = 6685576.

The previous prime is 6691309. The next prime is 6691331. The reversal of 6691327 is 7231966.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6691327 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 6691292 and 6691301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448 + ... + 3685.

It is an arithmetic number, because the mean of its divisors is an integer number (1674270).

Almost surely, 2^6691327 is an apocalyptic number.

6691327 is a deficient number, since it is larger than the sum of its proper divisors (5753).

6691327 is a wasteful number, since it uses less digits than its factorization.

6691327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its digits is 13608, while the sum is 34.

The square root of 6691327 is about 2586.7599424763. The cubic root of 6691327 is about 188.4389828472.

The spelling of 6691327 in words is "six million, six hundred ninety-one thousand, three hundred twenty-seven".