3655965 has 16 divisors (see below), whose sum is σ = 6104448. Its totient is φ = 1864896.

The previous prime is 3655957. The next prime is 3655987. The reversal of 3655965 is 5695563.

It is not a de Polignac number, because 3655965 - 2³ = 3655957 is a prime.

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, 4954 + ... + 5643.

It is an arithmetic number, because the mean of its divisors is an integer number (381528).

Almost surely, 2^3655965 is an apocalyptic number.

It is an amenable number.

3655965 is a deficient number, since it is larger than the sum of its proper divisors (2448483).

3655965 is a wasteful number, since it uses less digits than its factorization.

3655965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10628.

The product of its digits is 121500, while the sum is 39.

The square root of 3655965 is about 1912.0577920136. The cubic root of 3655965 is about 154.0520007671.

The spelling of 3655965 in words is "three million, six hundred fifty-five thousand, nine hundred sixty-five".