3656285 has 4 divisors (see below), whose sum is σ = 4387548. Its totient is φ = 2925024.

The previous prime is 3656281. The next prime is 3656321. The reversal of 3656285 is 5826563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 1038361 = 1618^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656285 - 2² = 3656281 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6³ + 5⁵ + 6⁸ + 2⁹ + 8 + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365624 + ... + 365633.

It is an arithmetic number, because the mean of its divisors is an integer number (1096887).

Almost surely, 2^3656285 is an apocalyptic number.

It is an amenable number.

3656285 is a deficient number, since it is larger than the sum of its proper divisors (731263).

3656285 is an equidigital number, since it uses as much as digits as its factorization.

3656285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731262.

The product of its digits is 43200, while the sum is 35.

The square root of 3656285 is about 1912.1414696617. The cubic root of 3656285 is about 154.0564952669.

The spelling of 3656285 in words is "three million, six hundred fifty-six thousand, two hundred eighty-five".