3261602065 has 16 divisors (see below), whose sum is σ = 4150074960. Its totient is φ = 2452285440.

The previous prime is 3261602053. The next prime is 3261602087. The reversal of 3261602065 is 5602061623.

It can be written as a sum of positive squares in 8 ways, for example, as 801342864 + 2460259201 = 28308^2 + 49601^2 .

It is not a de Polignac number, because 3261602065 - 2¹⁹ = 3261077777 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33205 + ... + 87325.

It is an arithmetic number, because the mean of its divisors is an integer number (259379685).

Almost surely, 2^3261602065 is an apocalyptic number.

It is an amenable number.

3261602065 is a deficient number, since it is larger than the sum of its proper divisors (888472895).

3261602065 is a wasteful number, since it uses less digits than its factorization.

3261602065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54852.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3261602065 is about 57110.4374436057. The cubic root of 3261602065 is about 1483.0085599898.

Adding to 3261602065 its reverse (5602061623), we get a palindrome (8863663688).

The spelling of 3261602065 in words is "three billion, two hundred sixty-one million, six hundred two thousand, sixty-five".