6681243 has 8 divisors (see below), whose sum is σ = 8946256. Its totient is φ = 4435200.

The previous prime is 6681239. The next prime is 6681287. The reversal of 6681243 is 3421866.

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

It is not a de Polignac number, because 6681243 - 2² = 6681239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6681243.

It is not an unprimeable number, because it can be changed into a prime (6681203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3898 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (1118282).

Almost surely, 2^6681243 is an apocalyptic number.

6681243 is a deficient number, since it is larger than the sum of its proper divisors (2265013).

6681243 is a wasteful number, since it uses less digits than its factorization.

6681243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9485.

The product of its digits is 6912, while the sum is 30.

The square root of 6681243 is about 2584.8100510482. The cubic root of 6681243 is about 188.3442744751.

The spelling of 6681243 in words is "six million, six hundred eighty-one thousand, two hundred forty-three".