6997913 has 4 divisors (see below), whose sum is σ = 7536228. Its totient is φ = 6459600.

The previous prime is 6997901. The next prime is 6997927. The reversal of 6997913 is 3197996.

It is a happy number.

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 1993744 + 5004169 = 1412^2 + 2237^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997913 - 2⁶ = 6997849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6997213) 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, 269138 + ... + 269163.

It is an arithmetic number, because the mean of its divisors is an integer number (1884057).

Almost surely, 2^6997913 is an apocalyptic number.

It is an amenable number.

6997913 is a deficient number, since it is larger than the sum of its proper divisors (538315).

6997913 is a wasteful number, since it uses less digits than its factorization.

6997913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538314.

The product of its digits is 91854, while the sum is 44.

The square root of 6997913 is about 2645.3568757353. The cubic root of 6997913 is about 191.2741054953.

The spelling of 6997913 in words is "six million, nine hundred ninety-seven thousand, nine hundred thirteen".