3973565 has 16 divisors (see below), whose sum is σ = 5070720. Its totient is φ = 2980800.

The previous prime is 3973561. The next prime is 3973577. The reversal of 3973565 is 5653793.

It is not a de Polignac number, because 3973565 - 2² = 3973561 is a prime.

It is a Smith number, since the sum of its digits (38) 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 (3973561) 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 15 ways as a sum of consecutive naturals, for example, 14207 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (316920).

Almost surely, 2^3973565 is an apocalyptic number.

It is an amenable number.

3973565 is a deficient number, since it is larger than the sum of its proper divisors (1097155).

3973565 is a wasteful number, since it uses less digits than its factorization.

3973565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its digits is 85050, while the sum is 38.

The square root of 3973565 is about 1993.3802948760. The cubic root of 3973565 is about 158.3896407919.

The spelling of 3973565 in words is "three million, nine hundred seventy-three thousand, five hundred sixty-five".