3666353565 has 64 divisors (see below), whose sum is σ = 7039272960. Its totient is φ = 1594010880.

The previous prime is 3666353531. The next prime is 3666353567. The reversal of 3666353565 is 5653536663.

3666353565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3666353565 - 2⁷ = 3666353437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666353567) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 195030 + ... + 213000.

It is an arithmetic number, because the mean of its divisors is an integer number (109988640).

Almost surely, 2^3666353565 is an apocalyptic number.

3666353565 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3666353565 is a deficient number, since it is larger than the sum of its proper divisors (3372919395).

3666353565 is a wasteful number, since it uses less digits than its factorization.

3666353565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18082.

The product of its digits is 4374000, while the sum is 48.

The square root of 3666353565 is about 60550.4216748323. The cubic root of 3666353565 is about 1541.9777767005.

The spelling of 3666353565 in words is "three billion, six hundred sixty-six million, three hundred fifty-three thousand, five hundred sixty-five".