6990885911 has 16 divisors (see below), whose sum is σ = 7482396384. Its totient is φ = 6508529664.

The previous prime is 6990885901. The next prime is 6990885959. The reversal of 6990885911 is 1195880996.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6990885911 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 (6990885901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047461 + ... + 1054113.

It is an arithmetic number, because the mean of its divisors is an integer number (467649774).

Almost surely, 2^6990885911 is an apocalyptic number.

6990885911 is a deficient number, since it is larger than the sum of its proper divisors (491510473).

6990885911 is a wasteful number, since it uses less digits than its factorization.

6990885911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7330.

The product of its (nonzero) digits is 1399680, while the sum is 56.

The square root of 6990885911 is about 83611.5178130382. The cubic root of 6990885911 is about 1912.1006019519.

The spelling of 6990885911 in words is "six billion, nine hundred ninety million, eight hundred eighty-five thousand, nine hundred eleven".