6729243 has 4 divisors (see below), whose sum is σ = 8972328. Its totient is φ = 4486160.

The previous prime is 6729241. The next prime is 6729257. The reversal of 6729243 is 3429276.

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 6729243 - 2¹ = 6729241 is a prime.

It is a super-2 number, since 2×6729243² = 90565422706098, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6 + 7⁸ + 2⁷ + 9³ + 2¹⁹ + 4⁹ + 3¹¹ .

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6729241) 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, 1121538 + ... + 1121543.

It is an arithmetic number, because the mean of its divisors is an integer number (2243082).

Almost surely, 2^6729243 is an apocalyptic number.

6729243 is a deficient number, since it is larger than the sum of its proper divisors (2243085).

6729243 is a wasteful number, since it uses less digits than its factorization.

6729243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243084.

The product of its digits is 18144, while the sum is 33.

The square root of 6729243 is about 2594.0784490836. The cubic root of 6729243 is about 188.7942387133.

Adding to 6729243 its sum of digits (33), we get a palindrome (6729276).

The spelling of 6729243 in words is "six million, seven hundred twenty-nine thousand, two hundred forty-three".