3645289 has 2 divisors, whose sum is σ = 3645290. Its totient is φ = 3645288.

The previous prime is 3645263. The next prime is 3645307. The reversal of 3645289 is 9825463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3534400 + 110889 = 1880^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645289 - 2¹³ = 3637097 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6⁸ + 4⁶ + 5⁹ + 2¹³ + 8 + 9 .

3645289 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3645589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822644 + 1822645.

It is an arithmetic number, because the mean of its divisors is an integer number (1822645).

Almost surely, 2^3645289 is an apocalyptic number.

It is an amenable number.

3645289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645289 is an equidigital number, since it uses as much as digits as its factorization.

3645289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 3645289 is about 1909.2639943182. The cubic root of 3645289 is about 153.9019024436.

The spelling of 3645289 in words is "three million, six hundred forty-five thousand, two hundred eighty-nine".