3665445663 has 16 divisors (see below), whose sum is σ = 5475655296. Its totient is φ = 2161441440.

The previous prime is 3665445601. The next prime is 3665445671.

3665445663 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3665445663 - 2¹² = 3665441567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665440663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499781 + ... + 1502222.

It is an arithmetic number, because the mean of its divisors is an integer number (342228456).

Almost surely, 2^3665445663 is an apocalyptic number.

3665445663 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3665445663 is a deficient number, since it is larger than the sum of its proper divisors (1810209633).

3665445663 is a wasteful number, since it uses less digits than its factorization.

3665445663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002054.

The product of its digits is 4665600, while the sum is 48.

The square root of 3665445663 is about 60542.9241365166. The cubic root of 3665445663 is about 1541.8504858054.

The spelling of 3665445663 in words is "three billion, six hundred sixty-five million, four hundred forty-five thousand, six hundred sixty-three".