3201985 has 8 divisors (see below), whose sum is σ = 3854376. Its totient is φ = 2553600.

The previous prime is 3201983. The next prime is 3202019. The reversal of 3201985 is 5891023.

3201985 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 746496 + 2455489 = 864^2 + 1567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3201985 - 2¹ = 3201983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201983) 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 7 ways as a sum of consecutive naturals, for example, 1207 + ... + 2803.

It is an arithmetic number, because the mean of its divisors is an integer number (481797).

Almost surely, 2^3201985 is an apocalyptic number.

It is an amenable number.

3201985 is a deficient number, since it is larger than the sum of its proper divisors (652391).

3201985 is a wasteful number, since it uses less digits than its factorization.

3201985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 3201985 is about 1789.4091203523. The cubic root of 3201985 is about 147.3917236580.

It can be divided in two parts, 3201 and 985, that added together give a triangular number (4186 = T₉₁).

The spelling of 3201985 in words is "three million, two hundred one thousand, nine hundred eighty-five".