3690385 has 8 divisors (see below), whose sum is σ = 4478760. Its totient is φ = 2918784.

The previous prime is 3690371. The next prime is 3690397. The reversal of 3690385 is 5830963.

3690385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 144 + 3690241 = 12^2 + 1921^2 .

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 3690385 - 2⁷ = 3690257 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3690385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3702 + ... + 4591.

It is an arithmetic number, because the mean of its divisors is an integer number (559845).

Almost surely, 2^3690385 is an apocalyptic number.

It is an amenable number.

3690385 is a deficient number, since it is larger than the sum of its proper divisors (788375).

3690385 is an equidigital number, since it uses as much as digits as its factorization.

3690385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8387.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3690385 is about 1921.0374801133. The cubic root of 3690385 is about 154.5339451951.

The spelling of 3690385 in words is "three million, six hundred ninety thousand, three hundred eighty-five".