3645737 has 2 divisors, whose sum is σ = 3645738.
Its totient is φ = 3645736.
The previous prime is 3645731. The next prime is 3645749. The reversal of 3645737 is 7375463.
It is a happy number.
3645737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 3031081 + 614656 = 1741^2 + 784^2
It is a cyclic number.
It is not a de Polignac number, because 3645737 - 212 = 3641641 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 3645697 and 3645706.
It is not a weakly prime, because it can be changed into another prime (3645731) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822868 + 1822869.
It is an arithmetic number, because the mean of its divisors is an integer number (1822869).
Almost surely, 23645737 is an apocalyptic number.
It is an amenable number.
3645737 is a deficient number, since it is larger than the sum of its proper divisors (1).
3645737 is an equidigital number, since it uses as much as digits as its factorization.
3645737 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 52920, while the sum is 35.
The square root of 3645737 is about 1909.3813134102.
The cubic root of 3645737 is about 153.9082069486.
The spelling of 3645737 in words is "three million, six hundred forty-five thousand, seven hundred thirty-seven".