6978893 has 4 divisors (see below), whose sum is σ = 6989148. Its totient is φ = 6968640.

The previous prime is 6978883. The next prime is 6978901. The reversal of 6978893 is 3988796.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5396329 + 1582564 = 2323^2 + 1258^2 .

It is a cyclic number.

It is not a de Polignac number, because 6978893 - 2⁴ = 6978877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1747287).

Almost surely, 2^6978893 is an apocalyptic number.

It is an amenable number.

6978893 is a deficient number, since it is larger than the sum of its proper divisors (10255).

6978893 is an equidigital number, since it uses as much as digits as its factorization.

6978893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254.

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

The square root of 6978893 is about 2641.7594515777. The cubic root of 6978893 is about 191.1006569032.

The spelling of 6978893 in words is "six million, nine hundred seventy-eight thousand, eight hundred ninety-three".