3663745 has 4 divisors (see below), whose sum is σ = 4396500. Its totient is φ = 2930992.

The previous prime is 3663743. The next prime is 3663749. The reversal of 3663745 is 5473663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 552049 + 3111696 = 743^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 3663745 - 2¹ = 3663743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3663745.

It is not an unprimeable number, because it can be changed into a prime (3663743) 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 in 3 ways as a sum of consecutive naturals, for example, 366370 + ... + 366379.

It is an arithmetic number, because the mean of its divisors is an integer number (1099125).

Almost surely, 2^3663745 is an apocalyptic number.

It is an amenable number.

3663745 is a deficient number, since it is larger than the sum of its proper divisors (732755).

3663745 is an equidigital number, since it uses as much as digits as its factorization.

3663745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732754.

The product of its digits is 45360, while the sum is 34.

The square root of 3663745 is about 1914.0911681527. The cubic root of 3663745 is about 154.1611990594.

The spelling of 3663745 in words is "three million, six hundred sixty-three thousand, seven hundred forty-five".