6687342 has 48 divisors (see below), whose sum is σ = 15668640. Its totient is φ = 2054976.

The previous prime is 6687323. The next prime is 6687353. The reversal of 6687342 is 2437866.

It is a junction number, because it is equal to n+sod(n) for n = 6687297 and 6687306.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11728 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (326430).

Almost surely, 2^6687342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6687342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7834320).

6687342 is an abundant number, since it is smaller than the sum of its proper divisors (8981298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6687342 is a wasteful number, since it uses less digits than its factorization.

6687342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 614 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 6687342 is about 2585.9895591437. The cubic root of 6687342 is about 188.4015673257.

The spelling of 6687342 in words is "six million, six hundred eighty-seven thousand, three hundred forty-two".