6987543 has 8 divisors (see below), whose sum is σ = 9533568. Its totient is φ = 4549944.

The previous prime is 6987529. The next prime is 6987551. The reversal of 6987543 is 3457896.

It is a happy number.

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

It is not a de Polignac number, because 6987543 - 2⁵ = 6987511 is a prime.

It is a super-3 number, since 3×6987543³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6987495 and 6987504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987523) 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, 26955 + ... + 27212.

It is an arithmetic number, because the mean of its divisors is an integer number (1191696).

Almost surely, 2^6987543 is an apocalyptic number.

6987543 is a deficient number, since it is larger than the sum of its proper divisors (2546025).

6987543 is a wasteful number, since it uses less digits than its factorization.

6987543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54213.

The product of its digits is 181440, while the sum is 42.

The square root of 6987543 is about 2643.3961110662. The cubic root of 6987543 is about 191.1795776434.

The spelling of 6987543 in words is "six million, nine hundred eighty-seven thousand, five hundred forty-three".