3616645 has 8 divisors (see below), whose sum is σ = 4385304. Its totient is φ = 2863104.

The previous prime is 3616637. The next prime is 3616649. The reversal of 3616645 is 5466163.

It can be written as a sum of positive squares in 4 ways, for example, as 134689 + 3481956 = 367^2 + 1866^2 .

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 3616645 - 2³ = 3616637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3616649) 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, 3244 + ... + 4213.

It is an arithmetic number, because the mean of its divisors is an integer number (548163).

Almost surely, 2^3616645 is an apocalyptic number.

It is an amenable number.

3616645 is a deficient number, since it is larger than the sum of its proper divisors (768659).

3616645 is an equidigital number, since it uses as much as digits as its factorization.

3616645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559.

The product of its digits is 12960, while the sum is 31.

The square root of 3616645 is about 1901.7478802407. The cubic root of 3616645 is about 153.4977311537.

The spelling of 3616645 in words is "three million, six hundred sixteen thousand, six hundred forty-five".