6999243 has 4 divisors (see below), whose sum is σ = 9332328. Its totient is φ = 4666160.

The previous prime is 6999241. The next prime is 6999263. The reversal of 6999243 is 3429996.

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

It is a cyclic number.

It is not a de Polignac number, because 6999243 - 2¹ = 6999241 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6999195 and 6999204.

It is not an unprimeable number, because it can be changed into a prime (6999241) 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, 1166538 + ... + 1166543.

It is an arithmetic number, because the mean of its divisors is an integer number (2333082).

Almost surely, 2^6999243 is an apocalyptic number.

6999243 is a deficient number, since it is larger than the sum of its proper divisors (2333085).

6999243 is a wasteful number, since it uses less digits than its factorization.

6999243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333084.

The product of its digits is 104976, while the sum is 42.

The square root of 6999243 is about 2645.6082476436. The cubic root of 6999243 is about 191.2862223672.

The spelling of 6999243 in words is "six million, nine hundred ninety-nine thousand, two hundred forty-three".