3645373 has 2 divisors, whose sum is σ = 3645374. Its totient is φ = 3645372.

The previous prime is 3645371. The next prime is 3645377. The reversal of 3645373 is 3735463.

3645373 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 1493284 = 1467^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645373 - 2¹ = 3645371 is a prime.

Together with 3645371, it forms a pair of twin primes.

It is equal to p₂₅₉₇₇₁ and since 3645373 and 259771 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822686 + 1822687.

It is an arithmetic number, because the mean of its divisors is an integer number (1822687).

Almost surely, 2^3645373 is an apocalyptic number.

It is an amenable number.

3645373 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645373 is an equidigital number, since it uses as much as digits as its factorization.

3645373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 31.

The square root of 3645373 is about 1909.2859921971. The cubic root of 3645373 is about 153.9030845776.

The spelling of 3645373 in words is "three million, six hundred forty-five thousand, three hundred seventy-three".