3665270865 has 16 divisors (see below), whose sum is σ = 5963832000. Its totient is φ = 1921678272.

The previous prime is 3665270863. The next prime is 3665270881. The reversal of 3665270865 is 5680725663.

It is not a de Polignac number, because 3665270865 - 2¹ = 3665270863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665270863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2069890 + ... + 2071659.

It is an arithmetic number, because the mean of its divisors is an integer number (372739500).

Almost surely, 2^3665270865 is an apocalyptic number.

It is an amenable number.

3665270865 is a deficient number, since it is larger than the sum of its proper divisors (2298561135).

3665270865 is a wasteful number, since it uses less digits than its factorization.

3665270865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141616.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 3665270865 is about 60541.4805319460. The cubic root of 3665270865 is about 1541.8259761286.

The spelling of 3665270865 in words is "three billion, six hundred sixty-five million, two hundred seventy thousand, eight hundred sixty-five".