6938887 has 4 divisors (see below), whose sum is σ = 6968160. Its totient is φ = 6909616.

The previous prime is 6938861. The next prime is 6938891. The reversal of 6938887 is 7888396.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6938887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6938887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6938837) 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 3 ways as a sum of consecutive naturals, for example, 14278 + ... + 14755.

It is an arithmetic number, because the mean of its divisors is an integer number (1742040).

Almost surely, 2^6938887 is an apocalyptic number.

6938887 is a deficient number, since it is larger than the sum of its proper divisors (29273).

6938887 is a wasteful number, since it uses less digits than its factorization.

6938887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29272.

The product of its digits is 580608, while the sum is 49.

The square root of 6938887 is about 2634.1767214824. The cubic root of 6938887 is about 190.7348000235.

The spelling of 6938887 in words is "six million, nine hundred thirty-eight thousand, eight hundred eighty-seven".