6878678 has 4 divisors (see below), whose sum is σ = 10318020. Its totient is φ = 3439338.

The previous prime is 6878671. The next prime is 6878699. The reversal of 6878678 is 8768786.

It is a happy number.

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

It is a super-2 number, since 2×6878678² = 94632422055368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719668 + ... + 1719671.

It is an arithmetic number, because the mean of its divisors is an integer number (2579505).

Almost surely, 2^6878678 is an apocalyptic number.

6878678 is a deficient number, since it is larger than the sum of its proper divisors (3439342).

6878678 is a wasteful number, since it uses less digits than its factorization.

6878678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439341.

The product of its digits is 903168, while the sum is 50.

The square root of 6878678 is about 2622.7233937265. The cubic root of 6878678 is about 190.1815255001.

The spelling of 6878678 in words is "six million, eight hundred seventy-eight thousand, six hundred seventy-eight".