6988678 has 4 divisors (see below), whose sum is σ = 10483020. Its totient is φ = 3494338.

The previous prime is 6988669. The next prime is 6988691. The reversal of 6988678 is 8768896.

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

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 as a sum of consecutive naturals, namely, 1747168 + ... + 1747171.

It is an arithmetic number, because the mean of its divisors is an integer number (2620755).

Almost surely, 2^6988678 is an apocalyptic number.

6988678 is a deficient number, since it is larger than the sum of its proper divisors (3494342).

6988678 is a wasteful number, since it uses less digits than its factorization.

6988678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494341.

The product of its digits is 1161216, while the sum is 52.

The square root of 6988678 is about 2643.6107882969. The cubic root of 6988678 is about 191.1899283047.

The spelling of 6988678 in words is "six million, nine hundred eighty-eight thousand, six hundred seventy-eight".