3665606771 has 4 divisors (see below), whose sum is σ = 3709770792. Its totient is φ = 3621442752.

The previous prime is 3665606753. The next prime is 3665606801. The reversal of 3665606771 is 1776065663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1776065663 = 127 ⋅13984769.

It is a cyclic number.

It is not a de Polignac number, because 3665606771 - 2¹⁴ = 3665590387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3665606701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22081886 + ... + 22082051.

It is an arithmetic number, because the mean of its divisors is an integer number (927442698).

Almost surely, 2^3665606771 is an apocalyptic number.

3665606771 is a deficient number, since it is larger than the sum of its proper divisors (44164021).

3665606771 is an equidigital number, since it uses as much as digits as its factorization.

3665606771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44164020.

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 3665606771 is about 60544.2546489756. The cubic root of 3665606771 is about 1541.8730752194.

The spelling of 3665606771 in words is "three billion, six hundred sixty-five million, six hundred six thousand, seven hundred seventy-one".