6681043 has 4 divisors (see below), whose sum is σ = 6687000. Its totient is φ = 6675088.

The previous prime is 6681041. The next prime is 6681067. The reversal of 6681043 is 3401866.

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 not a de Polignac number, because 6681043 - 2¹ = 6681041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6681041) 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, 730 + ... + 3727.

It is an arithmetic number, because the mean of its divisors is an integer number (1671750).

Almost surely, 2^6681043 is an apocalyptic number.

6681043 is a deficient number, since it is larger than the sum of its proper divisors (5957).

6681043 is a wasteful number, since it uses less digits than its factorization.

6681043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6681043 is about 2584.7713631964. The cubic root of 6681043 is about 188.3423951227.

It can be divided in two parts, 668 and 1043, that added together give a triangular number (1711 = T₅₈).

The spelling of 6681043 in words is "six million, six hundred eighty-one thousand, forty-three".