3696565 has 16 divisors (see below), whose sum is σ = 4743792. Its totient is φ = 2755584.

The previous prime is 3696557. The next prime is 3696577. The reversal of 3696565 is 5656963.

It can be written as a sum of positive squares in 8 ways, for example, as 158404 + 3538161 = 398^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 3696565 - 2³ = 3696557 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 15 ways as a sum of consecutive naturals, for example, 13207 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (296487).

Almost surely, 2^3696565 is an apocalyptic number.

3696565 is the 1570-th pentagonal number.

It is an amenable number.

3696565 is a deficient number, since it is larger than the sum of its proper divisors (1047227).

3696565 is a wasteful number, since it uses less digits than its factorization.

3696565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its digits is 145800, while the sum is 40.

The square root of 3696565 is about 1922.6453131038. The cubic root of 3696565 is about 154.6201590705.

The spelling of 3696565 in words is "three million, six hundred ninety-six thousand, five hundred sixty-five".