6988013 has 4 divisors (see below), whose sum is σ = 7066620. Its totient is φ = 6909408.

The previous prime is 6987983. The next prime is 6988039. The reversal of 6988013 is 3108896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4418404 + 2569609 = 2102^2 + 1603^2 .

It is a cyclic number.

It is not a de Polignac number, because 6988013 - 2⁶ = 6987949 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 (6988073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39170 + ... + 39347.

It is an arithmetic number, because the mean of its divisors is an integer number (1766655).

Almost surely, 2^6988013 is an apocalyptic number.

It is an amenable number.

6988013 is a deficient number, since it is larger than the sum of its proper divisors (78607).

6988013 is an equidigital number, since it uses as much as digits as its factorization.

6988013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78606.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 6988013 is about 2643.4850103604. The cubic root of 6988013 is about 191.1838639563.

The spelling of 6988013 in words is "six million, nine hundred eighty-eight thousand, thirteen".