6969727813 has 32 divisors (see below), whose sum is σ = 7632234720. Its totient is φ = 6340239360.

The previous prime is 6969727783. The next prime is 6969727819. The reversal of 6969727813 is 3187279696.

It can be written as a sum of positive squares in 16 ways, for example, as 1469725569 + 5500002244 = 38337^2 + 74162^2 .

It is a cyclic number.

It is not a de Polignac number, because 6969727813 - 2⁵ = 6969727781 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 (6969727819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22267345 + ... + 22267657.

It is an arithmetic number, because the mean of its divisors is an integer number (238507335).

Almost surely, 2^6969727813 is an apocalyptic number.

It is an amenable number.

6969727813 is a deficient number, since it is larger than the sum of its proper divisors (662506907).

6969727813 is a wasteful number, since it uses less digits than its factorization.

6969727813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 6858432, while the sum is 58.

The square root of 6969727813 is about 83484.8957177285. The cubic root of 6969727813 is about 1910.1696452115.

The spelling of 6969727813 in words is "six billion, nine hundred sixty-nine million, seven hundred twenty-seven thousand, eight hundred thirteen".