3657289 has 2 divisors, whose sum is σ = 3657290. Its totient is φ = 3657288.

The previous prime is 3657271. The next prime is 3657293. The reversal of 3657289 is 9827563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 984064 = 1635^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 3657289 - 2⁹ = 3656777 is a prime.

It is not a weakly prime, because it can be changed into another prime (3657239) 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 as a sum of consecutive naturals, namely, 1828644 + 1828645.

It is an arithmetic number, because the mean of its divisors is an integer number (1828645).

Almost surely, 2^3657289 is an apocalyptic number.

It is an amenable number.

3657289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3657289 is an equidigital number, since it uses as much as digits as its factorization.

3657289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 3657289 is about 1912.4039845179. The cubic root of 3657289 is about 154.0705950581.

The spelling of 3657289 in words is "three million, six hundred fifty-seven thousand, two hundred eighty-nine".