3645727 has 2 divisors, whose sum is σ = 3645728. Its totient is φ = 3645726.

The previous prime is 3645713. The next prime is 3645731. The reversal of 3645727 is 7275463.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645727 is a prime.

3645727 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3645692 and 3645701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3645737) 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, 1822863 + 1822864.

It is an arithmetic number, because the mean of its divisors is an integer number (1822864).

Almost surely, 2^3645727 is an apocalyptic number.

3645727 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645727 is an equidigital number, since it uses as much as digits as its factorization.

3645727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 34.

The square root of 3645727 is about 1909.3786947591. The cubic root of 3645727 is about 153.9080662287.

The spelling of 3645727 in words is "three million, six hundred forty-five thousand, seven hundred twenty-seven".