3540685 has 4 divisors (see below), whose sum is σ = 4248828. Its totient is φ = 2832544.

The previous prime is 3540683. The next prime is 3540703. The reversal of 3540685 is 5860453.

3540685 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 896809 + 2643876 = 947^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540685 - 2¹ = 3540683 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3540683) 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, 354064 + ... + 354073.

It is an arithmetic number, because the mean of its divisors is an integer number (1062207).

Almost surely, 2^3540685 is an apocalyptic number.

It is an amenable number.

3540685 is a deficient number, since it is larger than the sum of its proper divisors (708143).

3540685 is an equidigital number, since it uses as much as digits as its factorization.

3540685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708142.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 3540685 is about 1881.6708001136. The cubic root of 3540685 is about 152.4154866313.

It can be divided in two parts, 3540 and 685, that added together give a square (4225 = 65²).

The spelling of 3540685 in words is "three million, five hundred forty thousand, six hundred eighty-five".