3697565 has 4 divisors (see below), whose sum is σ = 4437084. Its totient is φ = 2958048.

The previous prime is 3697559. The next prime is 3697579. The reversal of 3697565 is 5657963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5657963 = 137 ⋅41299.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 2474329 = 1106^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 3697565 - 2¹⁶ = 3632029 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6 + 9⁵ + 7⁴ + 5⁵ + 6⁸ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 369752 + ... + 369761.

It is an arithmetic number, because the mean of its divisors is an integer number (1109271).

Almost surely, 2^3697565 is an apocalyptic number.

It is an amenable number.

3697565 is a deficient number, since it is larger than the sum of its proper divisors (739519).

3697565 is an equidigital number, since it uses as much as digits as its factorization.

3697565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739518.

The product of its digits is 170100, while the sum is 41.

The square root of 3697565 is about 1922.9053538851. The cubic root of 3697565 is about 154.6341005016.

The spelling of 3697565 in words is "three million, six hundred ninety-seven thousand, five hundred sixty-five".