6990013 has 4 divisors (see below), whose sum is σ = 7001280. Its totient is φ = 6978748.

The previous prime is 6990001. The next prime is 6990017. The reversal of 6990013 is 3100996.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6990013 - 2⁹ = 6989501 is a prime.

It is a Duffinian number.

6990013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4645 + ... + 5962.

It is an arithmetic number, because the mean of its divisors is an integer number (1750320).

Almost surely, 2^6990013 is an apocalyptic number.

It is an amenable number.

6990013 is a deficient number, since it is larger than the sum of its proper divisors (11267).

6990013 is a wasteful number, since it uses less digits than its factorization.

6990013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11266.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 6990013 is about 2643.8632718051. The cubic root of 6990013 is about 191.2021014370.

The spelling of 6990013 in words is "six million, nine hundred ninety thousand, thirteen".