6978443 has 4 divisors (see below), whose sum is σ = 6986760. Its totient is φ = 6970128.

The previous prime is 6978437. The next prime is 6978451. The reversal of 6978443 is 3448796.

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

It is a cyclic number.

It is not a de Polignac number, because 6978443 - 2¹⁰ = 6977419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6978443.

It is not an unprimeable number, because it can be changed into a prime (6978463) 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, 2738 + ... + 4631.

It is an arithmetic number, because the mean of its divisors is an integer number (1746690).

Almost surely, 2^6978443 is an apocalyptic number.

6978443 is a deficient number, since it is larger than the sum of its proper divisors (8317).

6978443 is an equidigital number, since it uses as much as digits as its factorization.

6978443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316.

The product of its digits is 145152, while the sum is 41.

The square root of 6978443 is about 2641.6742796946. The cubic root of 6978443 is about 191.0965494158.

The spelling of 6978443 in words is "six million, nine hundred seventy-eight thousand, four hundred forty-three".