6815143 has 8 divisors (see below), whose sum is σ = 7047936. Its totient is φ = 6585600.

The previous prime is 6815131. The next prime is 6815161. The reversal of 6815143 is 3415186.

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 6815143 - 2⁹ = 6814631 is a prime.

It is a super-2 number, since 2×6815143² = 92892348220898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6810143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3898 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (880992).

Almost surely, 2^6815143 is an apocalyptic number.

6815143 is a deficient number, since it is larger than the sum of its proper divisors (232793).

6815143 is a wasteful number, since it uses less digits than its factorization.

6815143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 2880, while the sum is 28.

The square root of 6815143 is about 2610.5828851044. The cubic root of 6815143 is about 189.5941753598.

The spelling of 6815143 in words is "six million, eight hundred fifteen thousand, one hundred forty-three".