16117663 has 4 divisors (see below), whose sum is σ = 16460640. Its totient is φ = 15774688.

The previous prime is 16117601. The next prime is 16117667. The reversal of 16117663 is 36671161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36671161 = 809 ⋅45329.

It is a cyclic number.

It is not a de Polignac number, because 16117663 - 2⁹ = 16117151 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 (16117667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171418 + ... + 171511.

It is an arithmetic number, because the mean of its divisors is an integer number (4115160).

Almost surely, 2^16117663 is an apocalyptic number.

16117663 is a deficient number, since it is larger than the sum of its proper divisors (342977).

16117663 is an equidigital number, since it uses as much as digits as its factorization.

16117663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342976.

The product of its digits is 4536, while the sum is 31.

The square root of 16117663 is about 4014.6809337729. The cubic root of 16117663 is about 252.6003940224.

The spelling of 16117663 in words is "sixteen million, one hundred seventeen thousand, six hundred sixty-three".