6978378 has 16 divisors (see below), whose sum is σ = 15225696. Its totient is φ = 2114640.

The previous prime is 6978371. The next prime is 6978383. The reversal of 6978378 is 8738796.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6978371) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 52801 + ... + 52932.

It is an arithmetic number, because the mean of its divisors is an integer number (951606).

Almost surely, 2^6978378 is an apocalyptic number.

6978378 is an abundant number, since it is smaller than the sum of its proper divisors (8247318).

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

6978378 is a wasteful number, since it uses less digits than its factorization.

6978378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105749.

The product of its digits is 508032, while the sum is 48.

The square root of 6978378 is about 2641.6619768623. The cubic root of 6978378 is about 191.0959560975.

The spelling of 6978378 in words is "six million, nine hundred seventy-eight thousand, three hundred seventy-eight".