4145663 has 4 divisors (see below), whose sum is σ = 4153248. Its totient is φ = 4138080.

The previous prime is 4145653. The next prime is 4145677. The reversal of 4145663 is 3665414.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3665414 = 2 ⋅1832707.

It is a cyclic number.

It is not a de Polignac number, because 4145663 - 2¹⁸ = 3883519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4145653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (1038312).

Almost surely, 2^4145663 is an apocalyptic number.

4145663 is a deficient number, since it is larger than the sum of its proper divisors (7585).

4145663 is an equidigital number, since it uses as much as digits as its factorization.

4145663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584.

The product of its digits is 8640, while the sum is 29.

The square root of 4145663 is about 2036.0901257066. The cubic root of 4145663 is about 160.6440576034.

Subtracting from 4145663 its reverse (3665414), we obtain a square (480249 = 693²).

The spelling of 4145663 in words is "four million, one hundred forty-five thousand, six hundred sixty-three".