6680143 has 4 divisors (see below), whose sum is σ = 6970608. Its totient is φ = 6389680.

The previous prime is 6680137. The next prime is 6680147. The reversal of 6680143 is 3410866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410866 = 2 ⋅1705433.

It is a cyclic number.

It is not a de Polignac number, because 6680143 - 2⁵ = 6680111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6680147) 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, 145198 + ... + 145243.

It is an arithmetic number, because the mean of its divisors is an integer number (1742652).

Almost surely, 2^6680143 is an apocalyptic number.

6680143 is a deficient number, since it is larger than the sum of its proper divisors (290465).

6680143 is a wasteful number, since it uses less digits than its factorization.

6680143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290464.

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

The square root of 6680143 is about 2584.5972606965. The cubic root of 6680143 is about 188.3339375726. Note that the first 3 decimals are identical.

The spelling of 6680143 in words is "six million, six hundred eighty thousand, one hundred forty-three".