3565997 has 4 divisors (see below), whose sum is σ = 3574560. Its totient is φ = 3557436.

The previous prime is 3565979. The next prime is 3566027. The reversal of 3565997 is 7995653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3565997 - 2⁸ = 3565741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3565907) 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, 3623 + ... + 4500.

It is an arithmetic number, because the mean of its divisors is an integer number (893640).

Almost surely, 2^3565997 is an apocalyptic number.

It is an amenable number.

3565997 is a deficient number, since it is larger than the sum of its proper divisors (8563).

3565997 is an equidigital number, since it uses as much as digits as its factorization.

3565997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8562.

The product of its digits is 255150, while the sum is 44.

The square root of 3565997 is about 1888.3847595233. The cubic root of 3565997 is about 152.7778255378. Note that the first 3 decimals are identical.

The spelling of 3565997 in words is "three million, five hundred sixty-five thousand, nine hundred ninety-seven".