4366721 has 2 divisors, whose sum is σ = 4366722. Its totient is φ = 4366720.

The previous prime is 4366717. The next prime is 4366727. The reversal of 4366721 is 1276634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3783025 + 583696 = 1945^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 4366721 - 2² = 4366717 is a prime.

It is not a weakly prime, because it can be changed into another prime (4366727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2183360 + 2183361.

It is an arithmetic number, because the mean of its divisors is an integer number (2183361).

Almost surely, 2^4366721 is an apocalyptic number.

It is an amenable number.

4366721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4366721 is an equidigital number, since it uses as much as digits as its factorization.

4366721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 4366721 is about 2089.6700696521. The cubic root of 4366721 is about 163.4500840495.

The spelling of 4366721 in words is "four million, three hundred sixty-six thousand, seven hundred twenty-one".