3559865 has 4 divisors (see below), whose sum is σ = 4271844. Its totient is φ = 2847888.

The previous prime is 3559861. The next prime is 3559867. The reversal of 3559865 is 5689553.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5689553 = 1783 ⋅3191.

It can be written as a sum of positive squares in 2 ways, for example, as 2042041 + 1517824 = 1429^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 3559865 - 2² = 3559861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3559861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355982 + ... + 355991.

It is an arithmetic number, because the mean of its divisors is an integer number (1067961).

Almost surely, 2^3559865 is an apocalyptic number.

It is an amenable number.

3559865 is a deficient number, since it is larger than the sum of its proper divisors (711979).

3559865 is an equidigital number, since it uses as much as digits as its factorization.

3559865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711978.

The product of its digits is 162000, while the sum is 41.

The square root of 3559865 is about 1886.7604511437. The cubic root of 3559865 is about 152.6902043082.

The spelling of 3559865 in words is "three million, five hundred fifty-nine thousand, eight hundred sixty-five".