6969690820 has 12 divisors (see below), whose sum is σ = 14636350764. Its totient is φ = 2787876320.

The previous prime is 6969690769. The next prime is 6969690823. The reversal of 6969690820 is 280969696.

It can be written as a sum of positive squares in 2 ways, for example, as 1338389056 + 5631301764 = 36584^2 + 75042^2 .

It is not an unprimeable number, because it can be changed into a prime (6969690823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174242251 + ... + 174242290.

It is an arithmetic number, because the mean of its divisors is an integer number (1219695897).

Almost surely, 2^6969690820 is an apocalyptic number.

It is an amenable number.

6969690820 is an abundant number, since it is smaller than the sum of its proper divisors (7666659944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6969690820 is a wasteful number, since it uses less digits than its factorization.

6969690820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348484550 (or 348484548 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 6969690820 is about 83484.6741623874. The cubic root of 6969690820 is about 1910.1662656902.

The spelling of 6969690820 in words is "six billion, nine hundred sixty-nine million, six hundred ninety thousand, eight hundred twenty".