6990706539 has 20 divisors (see below), whose sum is σ = 10665102624. Its totient is φ = 4561309584.

The previous prime is 6990706529. The next prime is 6990706543. The reversal of 6990706539 is 9356070996.

It is not a de Polignac number, because 6990706539 - 2⁹ = 6990706027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6990706529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 914332 + ... + 921945.

Almost surely, 2^6990706539 is an apocalyptic number.

6990706539 is a deficient number, since it is larger than the sum of its proper divisors (3674396085).

6990706539 is a wasteful number, since it uses less digits than its factorization.

6990706539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836336 (or 1836327 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 54.

The square root of 6990706539 is about 83610.4451548968. The cubic root of 6990706539 is about 1912.0842482667.

The spelling of 6990706539 in words is "six billion, nine hundred ninety million, seven hundred six thousand, five hundred thirty-nine".