3663120365 has 4 divisors (see below), whose sum is σ = 4395744444. Its totient is φ = 2930496288.

The previous prime is 3663120343. The next prime is 3663120379. The reversal of 3663120365 is 5630213663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1541504644 + 2121615721 = 39262^2 + 46061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663120365 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366312032 + ... + 366312041.

It is an arithmetic number, because the mean of its divisors is an integer number (1098936111).

Almost surely, 2^3663120365 is an apocalyptic number.

It is an amenable number.

3663120365 is a deficient number, since it is larger than the sum of its proper divisors (732624079).

3663120365 is an equidigital number, since it uses as much as digits as its factorization.

3663120365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732624078.

The product of its (nonzero) digits is 58320, while the sum is 35.

The square root of 3663120365 is about 60523.7173759180. The cubic root of 3663120365 is about 1541.5243753683.

The spelling of 3663120365 in words is "three billion, six hundred sixty-three million, one hundred twenty thousand, three hundred sixty-five".