6722459 has 6 divisors (see below), whose sum is σ = 6799980. Its totient is φ = 6645800.

The previous prime is 6722423. The next prime is 6722473. The reversal of 6722459 is 9542276.

It is not a de Polignac number, because 6722459 - 2²⁰ = 5673883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6722479) 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 5 ways as a sum of consecutive naturals, for example, 9872 + ... + 10530.

It is an arithmetic number, because the mean of its divisors is an integer number (1133330).

Almost surely, 2^6722459 is an apocalyptic number.

6722459 is a deficient number, since it is larger than the sum of its proper divisors (77521).

6722459 is an equidigital number, since it uses as much as digits as its factorization.

6722459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 760 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 6722459 is about 2592.7705259047. The cubic root of 6722459 is about 188.7307738849.

The spelling of 6722459 in words is "six million, seven hundred twenty-two thousand, four hundred fifty-nine".