6978408 has 16 divisors (see below), whose sum is σ = 17446080. Its totient is φ = 2326128.

The previous prime is 6978383. The next prime is 6978421. The reversal of 6978408 is 8048796.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6978408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145360 + ... + 145407.

It is an arithmetic number, because the mean of its divisors is an integer number (1090380).

Almost surely, 2^6978408 is an apocalyptic number.

It is an amenable number.

6978408 is an abundant number, since it is smaller than the sum of its proper divisors (10467672).

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

6978408 is a wasteful number, since it uses less digits than its factorization.

6978408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290776 (or 290772 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 6978408 is about 2641.6676550997. The cubic root of 6978408 is about 191.0962299372.

The spelling of 6978408 in words is "six million, nine hundred seventy-eight thousand, four hundred eight".