6961881970 has 16 divisors (see below), whose sum is σ = 12536800920. Its totient is φ = 2783549824.

The previous prime is 6961881931. The next prime is 6961881989. The reversal of 6961881970 is 791881696.

It can be written as a sum of positive squares in 4 ways, for example, as 4218112809 + 2743769161 = 64947^2 + 52381^2 .

It is a super-2 number, since 2×6961881970² = 96935601128422161800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125875 + ... + 172534.

Almost surely, 2^6961881970 is an apocalyptic number.

6961881970 is a deficient number, since it is larger than the sum of its proper divisors (5574918950).

6961881970 is a wasteful number, since it uses less digits than its factorization.

6961881970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300749.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 6961881970 is about 83437.8928904607. The cubic root of 6961881970 is about 1909.4526149029.

The spelling of 6961881970 in words is "six billion, nine hundred sixty-one million, eight hundred eighty-one thousand, nine hundred seventy".