3653995 has 4 divisors (see below), whose sum is σ = 4384800. Its totient is φ = 2923192.

The previous prime is 3653989. The next prime is 3653999. The reversal of 3653995 is 5993563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5993563 = 947 ⋅6329.

It is a cyclic number.

It is not a de Polignac number, because 3653995 - 2⁹ = 3653483 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3653999) 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, 365395 + ... + 365404.

It is an arithmetic number, because the mean of its divisors is an integer number (1096200).

Almost surely, 2^3653995 is an apocalyptic number.

3653995 is a deficient number, since it is larger than the sum of its proper divisors (730805).

3653995 is an equidigital number, since it uses as much as digits as its factorization.

3653995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730804.

The product of its digits is 109350, while the sum is 40.

The square root of 3653995 is about 1911.5425708051. The cubic root of 3653995 is about 154.0243257239.

The spelling of 3653995 in words is "three million, six hundred fifty-three thousand, nine hundred ninety-five".