6963391 has 2 divisors, whose sum is σ = 6963392. Its totient is φ = 6963390.

The previous prime is 6963373. The next prime is 6963401. The reversal of 6963391 is 1933696.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6963391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6963391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6963301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3481695 + 3481696.

It is an arithmetic number, because the mean of its divisors is an integer number (3481696).

Almost surely, 2^6963391 is an apocalyptic number.

6963391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6963391 is an equidigital number, since it uses as much as digits as its factorization.

6963391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 37.

The square root of 6963391 is about 2638.8237910099. The cubic root of 6963391 is about 190.9590566735.

The spelling of 6963391 in words is "six million, nine hundred sixty-three thousand, three hundred ninety-one".