3669685 has 4 divisors (see below), whose sum is σ = 4403628. Its totient is φ = 2935744.

The previous prime is 3669649. The next prime is 3669691. The reversal of 3669685 is 5869663.

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 579121 + 3090564 = 761^2 + 1758^2 .

It is a cyclic number.

It is not a de Polignac number, because 3669685 - 2⁷ = 3669557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366964 + ... + 366973.

It is an arithmetic number, because the mean of its divisors is an integer number (1100907).

Almost surely, 2^3669685 is an apocalyptic number.

It is an amenable number.

3669685 is a deficient number, since it is larger than the sum of its proper divisors (733943).

3669685 is an equidigital number, since it uses as much as digits as its factorization.

3669685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733942.

The product of its digits is 233280, while the sum is 43.

The square root of 3669685 is about 1915.6421899718. The cubic root of 3669685 is about 154.2444675079.

The spelling of 3669685 in words is "three million, six hundred sixty-nine thousand, six hundred eighty-five".