6961881967 has 4 divisors (see below), whose sum is σ = 6963732880. Its totient is φ = 6960031056.

The previous prime is 6961881931. The next prime is 6961881989. The reversal of 6961881967 is 7691881696.

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 6961881967 - 2¹⁹ = 6961357679 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 (6961881167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919803 + ... + 927340.

It is an arithmetic number, because the mean of its divisors is an integer number (1740933220).

Almost surely, 2^6961881967 is an apocalyptic number.

6961881967 is a deficient number, since it is larger than the sum of its proper divisors (1850913).

6961881967 is a wasteful number, since it uses less digits than its factorization.

6961881967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850912.

The product of its digits is 7838208, while the sum is 61.

The square root of 6961881967 is about 83437.8928724833. The cubic root of 6961881967 is about 1909.4526146286.

The spelling of 6961881967 in words is "six billion, nine hundred sixty-one million, eight hundred eighty-one thousand, nine hundred sixty-seven".