6722723 has 4 divisors (see below), whose sum is σ = 7683120. Its totient is φ = 5762328.

The previous prime is 6722719. The next prime is 6722741. The reversal of 6722723 is 3272276.

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 6722723 - 2² = 6722719 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 7⁶ + 2⁵ + 2¹⁷ + 7⁸ + 2¹⁷ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6722743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480188 + ... + 480201.

It is an arithmetic number, because the mean of its divisors is an integer number (1920780).

Almost surely, 2^6722723 is an apocalyptic number.

6722723 is a deficient number, since it is larger than the sum of its proper divisors (960397).

6722723 is an equidigital number, since it uses as much as digits as its factorization.

6722723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960396.

The product of its digits is 7056, while the sum is 29.

The square root of 6722723 is about 2592.8214361965. The cubic root of 6722723 is about 188.7332444229.

Adding to 6722723 its reverse (3272276), we get a palindrome (9994999).

The spelling of 6722723 in words is "six million, seven hundred twenty-two thousand, seven hundred twenty-three".