6961881968 has 20 divisors (see below), whose sum is σ = 13651162728. Its totient is φ = 3439001280.

The previous prime is 6961881931. The next prime is 6961881989. The reversal of 6961881968 is 8691881696.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6961881968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2619863 + ... + 2622518.

Almost surely, 2^6961881968 is an apocalyptic number.

It is an amenable number.

6961881968 is a deficient number, since it is larger than the sum of its proper divisors (6689280760).

6961881968 is a wasteful number, since it uses less digits than its factorization.

6961881968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242472 (or 5242466 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 6961881968 is about 83437.8928784758. The cubic root of 6961881968 is about 1909.4526147200.

The spelling of 6961881968 in words is "six billion, nine hundred sixty-one million, eight hundred eighty-one thousand, nine hundred sixty-eight".