6879978 has 40 divisors (see below), whose sum is σ = 17621472. Its totient is φ = 1965384.

The previous prime is 6879973. The next prime is 6879997. The reversal of 6879978 is 8799786.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6879973) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1900 + ... + 4167.

Almost surely, 2^6879978 is an apocalyptic number.

6879978 is an abundant number, since it is smaller than the sum of its proper divisors (10741494).

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

6879978 is a wasteful number, since it uses less digits than its factorization.

6879978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6079 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 6879978 is about 2622.9712160068. The cubic root of 6879978 is about 190.1935055351.

The spelling of 6879978 in words is "six million, eight hundred seventy-nine thousand, nine hundred seventy-eight".