3318685 has 4 divisors (see below), whose sum is σ = 3982428. Its totient is φ = 2654944.

The previous prime is 3318683. The next prime is 3318703. The reversal of 3318685 is 5868133.

It is a happy number.

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 622521 + 2696164 = 789^2 + 1642^2 .

It is a cyclic number.

It is not a de Polignac number, because 3318685 - 2¹ = 3318683 is a prime.

It is a super-2 number, since 2×3318685² = 22027340258450, which contains 22 as substring.

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 3318685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318683) 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, 331864 + ... + 331873.

It is an arithmetic number, because the mean of its divisors is an integer number (995607).

Almost surely, 2^3318685 is an apocalyptic number.

It is an amenable number.

3318685 is a deficient number, since it is larger than the sum of its proper divisors (663743).

3318685 is an equidigital number, since it uses as much as digits as its factorization.

3318685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663742.

The product of its digits is 17280, while the sum is 34.

The square root of 3318685 is about 1821.7258300853. The cubic root of 3318685 is about 149.1610198681.

It can be divided in two parts, 33 and 18685, that multiplied together give a triangular number (616605 = T₁₁₁₀).

The spelling of 3318685 in words is "three million, three hundred eighteen thousand, six hundred eighty-five".