3644573 has 2 divisors, whose sum is σ = 3644574. Its totient is φ = 3644572.

The previous prime is 3644569. The next prime is 3644587. The reversal of 3644573 is 3754463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3286969 + 357604 = 1813^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644573 - 2² = 3644569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822286 + 1822287.

It is an arithmetic number, because the mean of its divisors is an integer number (1822287).

Almost surely, 2^3644573 is an apocalyptic number.

It is an amenable number.

3644573 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644573 is an equidigital number, since it uses as much as digits as its factorization.

3644573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 32.

The square root of 3644573 is about 1909.0764783004. The cubic root of 3644573 is about 153.8918254211.

The spelling of 3644573 in words is "three million, six hundred forty-four thousand, five hundred seventy-three".