6685143 has 8 divisors (see below), whose sum is σ = 9005808. Its totient is φ = 4410624.

The previous prime is 6685141. The next prime is 6685163. The reversal of 6685143 is 3415866.

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

It is not a de Polignac number, because 6685143 - 2¹ = 6685141 is a prime.

It is a super-2 number, since 2×6685143² = 89382273860898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685141) 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, 11196 + ... + 11777.

It is an arithmetic number, because the mean of its divisors is an integer number (1125726).

Almost surely, 2^6685143 is an apocalyptic number.

6685143 is a deficient number, since it is larger than the sum of its proper divisors (2320665).

6685143 is a wasteful number, since it uses less digits than its factorization.

6685143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23073.

The product of its digits is 17280, while the sum is 33.

The square root of 6685143 is about 2585.5643484547. The cubic root of 6685143 is about 188.3809143535.

The spelling of 6685143 in words is "six million, six hundred eighty-five thousand, one hundred forty-three".