3261866065 has 8 divisors (see below), whose sum is σ = 3914558208. Its totient is φ = 2609280240.

The previous prime is 3261866063. The next prime is 3261866087. The reversal of 3261866065 is 5606681623.

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

It is not a de Polignac number, because 3261866065 - 2¹ = 3261866063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261866063) 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, 79194 + ... + 113116.

It is an arithmetic number, because the mean of its divisors is an integer number (489319776).

Almost surely, 2^3261866065 is an apocalyptic number.

It is an amenable number.

3261866065 is a deficient number, since it is larger than the sum of its proper divisors (652692143).

3261866065 is a wasteful number, since it uses less digits than its factorization.

3261866065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53159.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 3261866065 is about 57112.7487081475. The cubic root of 3261866065 is about 1483.0485713798.

The spelling of 3261866065 in words is "three billion, two hundred sixty-one million, eight hundred sixty-six thousand, sixty-five".