3645685 has 8 divisors (see below), whose sum is σ = 4417920. Its totient is φ = 2887824.

The previous prime is 3645683. The next prime is 3645703. The reversal of 3645685 is 5865463.

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 3645685 - 2¹ = 3645683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645683) 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, 3025 + ... + 4054.

It is an arithmetic number, because the mean of its divisors is an integer number (552240).

Almost surely, 2^3645685 is an apocalyptic number.

It is an amenable number.

3645685 is a deficient number, since it is larger than the sum of its proper divisors (772235).

3645685 is a wasteful number, since it uses less digits than its factorization.

3645685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187.

The product of its digits is 86400, while the sum is 37.

The square root of 3645685 is about 1909.3676963854. The cubic root of 3645685 is about 153.9074752022.

The spelling of 3645685 in words is "three million, six hundred forty-five thousand, six hundred eighty-five".