3685859 has 4 divisors (see below), whose sum is σ = 3775800. Its totient is φ = 3595920.

The previous prime is 3685849. The next prime is 3685861. The reversal of 3685859 is 9585863.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685859 is a prime.

It is a super-3 number, since 3×3685859³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44909 + ... + 44990.

It is an arithmetic number, because the mean of its divisors is an integer number (943950).

Almost surely, 2^3685859 is an apocalyptic number.

3685859 is a deficient number, since it is larger than the sum of its proper divisors (89941).

3685859 is an equidigital number, since it uses as much as digits as its factorization.

3685859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89940.

The product of its digits is 259200, while the sum is 44.

The square root of 3685859 is about 1919.8591094140. The cubic root of 3685859 is about 154.4707443131.

The spelling of 3685859 in words is "three million, six hundred eighty-five thousand, eight hundred fifty-nine".