3641326665 has 8 divisors (see below), whose sum is σ = 5826122688. Its totient is φ = 1942040880.

The previous prime is 3641326643. The next prime is 3641326721. The reversal of 3641326665 is 5666231463.

It is a happy number.

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

It is not a de Polignac number, because 3641326665 - 2¹⁰ = 3641325641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121377541 + ... + 121377570.

It is an arithmetic number, because the mean of its divisors is an integer number (728265336).

Almost surely, 2^3641326665 is an apocalyptic number.

It is an amenable number.

3641326665 is a deficient number, since it is larger than the sum of its proper divisors (2184796023).

3641326665 is a wasteful number, since it uses less digits than its factorization.

3641326665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242755119.

The product of its digits is 466560, while the sum is 42.

The square root of 3641326665 is about 60343.4061435050. The cubic root of 3641326665 is about 1538.4611976285.

The spelling of 3641326665 in words is "three billion, six hundred forty-one million, three hundred twenty-six thousand, six hundred sixty-five".