3655913 has 8 divisors (see below), whose sum is σ = 3771336. Its totient is φ = 3542400.

The previous prime is 3655907. The next prime is 3655921. The reversal of 3655913 is 3195563.

It can be written as a sum of positive squares in 4 ways, for example, as 169 + 3655744 = 13^2 + 1912^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3655913 - 2⁶ = 3655849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3655913.

It is not an unprimeable number, because it can be changed into a prime (3655513) 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 7 ways as a sum of consecutive naturals, for example, 4043 + ... + 4863.

It is an arithmetic number, because the mean of its divisors is an integer number (471417).

Almost surely, 2^3655913 is an apocalyptic number.

It is an amenable number.

3655913 is a deficient number, since it is larger than the sum of its proper divisors (115423).

3655913 is an equidigital number, since it uses as much as digits as its factorization.

3655913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 12150, while the sum is 32.

The square root of 3655913 is about 1912.0441940499. The cubic root of 3655913 is about 154.0512703861.

The spelling of 3655913 in words is "three million, six hundred fifty-five thousand, nine hundred thirteen".