163616 has 12 divisors (see below), whose sum is σ = 322182. Its totient is φ = 81792.

The previous prime is 163613. The next prime is 163621. The reversal of 163616 is 616361.

163616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 163216 + 400 = 404^2 + 20^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 163591 and 163600.

It is not an unprimeable number, because it can be changed into a prime (163613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525 + ... + 2588.

2¹⁶³⁶¹⁶ is an apocalyptic number.

163616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163616 is a deficient number, since it is larger than the sum of its proper divisors (158566).

163616 is an equidigital number, since it uses as much as digits as its factorization.

163616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123 (or 5115 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 163616 is about 404.4947465666. The cubic root of 163616 is about 54.6942817712.

Adding to 163616 its reverse (616361), we get a palindrome (779977).

The spelling of 163616 in words is "one hundred sixty-three thousand, six hundred sixteen".