6722397 has 18 divisors (see below), whose sum is σ = 10674846. Its totient is φ = 4073520.

The previous prime is 6722393. The next prime is 6722399. The reversal of 6722397 is 7932276.

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 3059001 = 1914^2 + 1749^2 .

It is not a de Polignac number, because 6722397 - 2² = 6722393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722393) 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 17 ways as a sum of consecutive naturals, for example, 1998 + ... + 4175.

It is an arithmetic number, because the mean of its divisors is an integer number (593047).

Almost surely, 2^6722397 is an apocalyptic number.

It is an amenable number.

6722397 is a deficient number, since it is larger than the sum of its proper divisors (3952449).

6722397 is a wasteful number, since it uses less digits than its factorization.

6722397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201 (or 6187 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 6722397 is about 2592.7585695548. The cubic root of 6722397 is about 188.7301936734.

The spelling of 6722397 in words is "six million, seven hundred twenty-two thousand, three hundred ninety-seven".