3690985 has 4 divisors (see below), whose sum is σ = 4429188. Its totient is φ = 2952784.

The previous prime is 3690983. The next prime is 3691003. The reversal of 3690985 is 5890963.

3690985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 393129 + 3297856 = 627^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 3690985 - 2¹ = 3690983 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

3690985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3690983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 369094 + ... + 369103.

It is an arithmetic number, because the mean of its divisors is an integer number (1107297).

Almost surely, 2^3690985 is an apocalyptic number.

It is an amenable number.

3690985 is a deficient number, since it is larger than the sum of its proper divisors (738203).

3690985 is an equidigital number, since it uses as much as digits as its factorization.

3690985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738202.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 3690985 is about 1921.1936393815. The cubic root of 3690985 is about 154.5423196911.

The spelling of 3690985 in words is "three million, six hundred ninety thousand, nine hundred eighty-five".