6999770111 has 8 divisors (see below), whose sum is σ = 7458731280. Its totient is φ = 6546054528.

The previous prime is 6999770083. The next prime is 6999770117. The reversal of 6999770111 is 1110779996.

6999770111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6999770111 - 2¹⁴ = 6999753727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6999770111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999770117) 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 7 ways as a sum of consecutive naturals, for example, 1308641 + ... + 1313978.

It is an arithmetic number, because the mean of its divisors is an integer number (932341410).

Almost surely, 2^6999770111 is an apocalyptic number.

6999770111 is a deficient number, since it is larger than the sum of its proper divisors (458961169).

6999770111 is a wasteful number, since it uses less digits than its factorization.

6999770111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622793.

The product of its (nonzero) digits is 214326, while the sum is 50.

The square root of 6999770111 is about 83664.6287925788. The cubic root of 6999770111 is about 1912.9102415033.

The spelling of 6999770111 in words is "six billion, nine hundred ninety-nine million, seven hundred seventy thousand, one hundred eleven".