6987123 has 48 divisors (see below), whose sum is σ = 12186720. Its totient is φ = 3801600.

The previous prime is 6987109. The next prime is 6987139. The reversal of 6987123 is 3217896.

It is not a de Polignac number, because 6987123 - 2⁴ = 6987107 is a prime.

It is a super-3 number, since 3×6987123³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6987103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78463 + ... + 78551.

It is an arithmetic number, because the mean of its divisors is an integer number (253890).

Almost surely, 2^6987123 is an apocalyptic number.

6987123 is a deficient number, since it is larger than the sum of its proper divisors (5199597).

6987123 is a wasteful number, since it uses less digits than its factorization.

6987123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 177 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 6987123 is about 2643.3166666141. The cubic root of 6987123 is about 191.1757471587.

The spelling of 6987123 in words is "six million, nine hundred eighty-seven thousand, one hundred twenty-three".