6985143 has 32 divisors (see below), whose sum is σ = 11692800. Its totient is φ = 4082400.

The previous prime is 6985133. The next prime is 6985157. The reversal of 6985143 is 3415896.

It is not a de Polignac number, because 6985143 - 2¹³ = 6976951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6985098 and 6985107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8208 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (365400).

Almost surely, 2^6985143 is an apocalyptic number.

6985143 is a deficient number, since it is larger than the sum of its proper divisors (4707657).

6985143 is a wasteful number, since it uses less digits than its factorization.

6985143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 854 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6985143 is about 2642.9421106033. The cubic root of 6985143 is about 191.1576870911.

The spelling of 6985143 in words is "six million, nine hundred eighty-five thousand, one hundred forty-three".