3665445601 has 2 divisors, whose sum is σ = 3665445602. Its totient is φ = 3665445600.

The previous prime is 3665445593. The next prime is 3665445671. The reversal of 3665445601 is 1065445663.

3665445601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2360502225 + 1304943376 = 48585^2 + 36124^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665445601 - 2³ = 3665445593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3665445671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832722800 + 1832722801.

It is an arithmetic number, because the mean of its divisors is an integer number (1832722801).

Almost surely, 2^3665445601 is an apocalyptic number.

It is an amenable number.

3665445601 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665445601 is an equidigital number, since it uses as much as digits as its factorization.

3665445601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 3665445601 is about 60542.9236244832. The cubic root of 3665445601 is about 1541.8504771120.

The spelling of 3665445601 in words is "three billion, six hundred sixty-five million, four hundred forty-five thousand, six hundred one".