6999213 has 16 divisors (see below), whose sum is σ = 10112256. Its totient is φ = 4280640.

The previous prime is 6999203. The next prime is 6999241. The reversal of 6999213 is 3129996.

It is a happy number.

It is not a de Polignac number, because 6999213 - 2¹² = 6995117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999203) 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 15 ways as a sum of consecutive naturals, for example, 7228 + ... + 8138.

It is an arithmetic number, because the mean of its divisors is an integer number (632016).

Almost surely, 2^6999213 is an apocalyptic number.

It is an amenable number.

6999213 is a deficient number, since it is larger than the sum of its proper divisors (3113043).

6999213 is a wasteful number, since it uses less digits than its factorization.

6999213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its digits is 26244, while the sum is 39.

The square root of 6999213 is about 2645.6025778639. The cubic root of 6999213 is about 191.2859490712.

The spelling of 6999213 in words is "six million, nine hundred ninety-nine thousand, two hundred thirteen".