6966391 has 4 divisors (see below), whose sum is σ = 6976800. Its totient is φ = 6955984.

The previous prime is 6966367. The next prime is 6966419. The reversal of 6966391 is 1936696.

It is a happy number.

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 6966391 - 2⁵ = 6966359 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 (6966341) 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 3 ways as a sum of consecutive naturals, for example, 4126 + ... + 5563.

It is an arithmetic number, because the mean of its divisors is an integer number (1744200).

Almost surely, 2^6966391 is an apocalyptic number.

6966391 is a deficient number, since it is larger than the sum of its proper divisors (10409).

6966391 is an equidigital number, since it uses as much as digits as its factorization.

6966391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10408.

The product of its digits is 52488, while the sum is 40.

The square root of 6966391 is about 2639.3921648743. The cubic root of 6966391 is about 190.9864760213.

The spelling of 6966391 in words is "six million, nine hundred sixty-six thousand, three hundred ninety-one".