2664401 has 2 divisors, whose sum is σ = 2664402. Its totient is φ = 2664400.

The previous prime is 2664397. The next prime is 2664439. The reversal of 2664401 is 1044662.

It is a happy number.

2664401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2483776 + 180625 = 1576^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664401 - 2² = 2664397 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2664451) 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 as a sum of consecutive naturals, namely, 1332200 + 1332201.

It is an arithmetic number, because the mean of its divisors is an integer number (1332201).

2^2664401 is an apocalyptic number.

It is an amenable number.

2664401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664401 is an equidigital number, since it uses as much as digits as its factorization.

2664401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2664401 is about 1632.2992985357. The cubic root of 2664401 is about 138.6329706042.

The spelling of 2664401 in words is "two million, six hundred sixty-four thousand, four hundred one".