6722543 has 4 divisors (see below), whose sum is σ = 6748368. Its totient is φ = 6696720.

The previous prime is 6722539. The next prime is 6722549. The reversal of 6722543 is 3452276.

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 6722543 - 2² = 6722539 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 7⁶ + 2¹⁵ + 2²¹ + 5 + 4¹¹ + 3⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722549) 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, 12518 + ... + 13043.

It is an arithmetic number, because the mean of its divisors is an integer number (1687092).

Almost surely, 2^6722543 is an apocalyptic number.

6722543 is a deficient number, since it is larger than the sum of its proper divisors (25825).

6722543 is a wasteful number, since it uses less digits than its factorization.

6722543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25824.

The product of its digits is 10080, while the sum is 29.

The square root of 6722543 is about 2592.7867247423. The cubic root of 6722543 is about 188.7315599722.

The spelling of 6722543 in words is "six million, seven hundred twenty-two thousand, five hundred forty-three".