6893978 has 16 divisors (see below), whose sum is σ = 12727680. Its totient is φ = 2727216.

The previous prime is 6893933. The next prime is 6893987. The reversal of 6893978 is 8793986.

It is a d-powerful number, because it can be written as 6³ + 8³ + 9⁴ + 3¹⁴ + 9⁴ + 7 + 8⁷ .

It is a nialpdrome in base 14.

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 in 7 ways as a sum of consecutive naturals, for example, 18758 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (795480).

Almost surely, 2^6893978 is an apocalyptic number.

6893978 is a deficient number, since it is larger than the sum of its proper divisors (5833702).

6893978 is a wasteful number, since it uses less digits than its factorization.

6893978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37901.

The product of its digits is 653184, while the sum is 50.

The square root of 6893978 is about 2625.6385889913. The cubic root of 6893978 is about 190.3224257637.

The spelling of 6893978 in words is "six million, eight hundred ninety-three thousand, nine hundred seventy-eight".