6691043 has 8 divisors (see below), whose sum is σ = 6926640. Its totient is φ = 6458400.

The previous prime is 6691039. The next prime is 6691049. The reversal of 6691043 is 3401966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6691043 - 2² = 6691039 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 = 6690997 and 6691015.

It is not an unprimeable number, because it can be changed into a prime (6691049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4493 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (865830).

Almost surely, 2^6691043 is an apocalyptic number.

6691043 is a deficient number, since it is larger than the sum of its proper divisors (235597).

6691043 is a wasteful number, since it uses less digits than its factorization.

6691043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 6691043 is about 2586.7050469661. The cubic root of 6691043 is about 188.4363168375.

The spelling of 6691043 in words is "six million, six hundred ninety-one thousand, forty-three".