6722001 has 32 divisors (see below), whose sum is σ = 11706240. Its totient is φ = 3758400.

The previous prime is 6721999. The next prime is 6722039. The reversal of 6722001 is 1002276.

It is a happy number.

It is not a de Polignac number, because 6722001 - 2¹ = 6721999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6722801) 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 31 ways as a sum of consecutive naturals, for example, 2991 + ... + 4731.

It is an arithmetic number, because the mean of its divisors is an integer number (365820).

Almost surely, 2^6722001 is an apocalyptic number.

It is an amenable number.

6722001 is a deficient number, since it is larger than the sum of its proper divisors (4984239).

6722001 is a wasteful number, since it uses less digits than its factorization.

6722001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 6722001 is about 2592.6822018905. The cubic root of 6722001 is about 188.7264877222.

Adding to 6722001 its reverse (1002276), we get a palindrome (7724277).

The spelling of 6722001 in words is "six million, seven hundred twenty-two thousand, one".