6878738 has 8 divisors (see below), whose sum is σ = 10329660. Its totient is φ = 3435520.

The previous prime is 6878737. The next prime is 6878743. The reversal of 6878738 is 8378786.

It can be written as a sum of positive squares in 2 ways, for example, as 4870849 + 2007889 = 2207^2 + 1417^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6878692 and 6878701.

It is not an unprimeable number, because it can be changed into a prime (6878731) 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, 1598 + ... + 4038.

Almost surely, 2^6878738 is an apocalyptic number.

6878738 is a deficient number, since it is larger than the sum of its proper divisors (3450922).

6878738 is a wasteful number, since it uses less digits than its factorization.

6878738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852.

The product of its digits is 451584, while the sum is 47.

The square root of 6878738 is about 2622.7348321933. The cubic root of 6878738 is about 190.1820784580.

It can be divided in two parts, 687 and 8738, that multiplied together give a palindrome (6003006).

The spelling of 6878738 in words is "six million, eight hundred seventy-eight thousand, seven hundred thirty-eight".