163507 has 4 divisors (see below), whose sum is σ = 170640. Its totient is φ = 156376.

The previous prime is 163487. The next prime is 163517. The reversal of 163507 is 705361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705361 = 331 ⋅2131.

It is a cyclic number.

It is not a de Polignac number, because 163507 - 2¹¹ = 161459 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163517) 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, 3532 + ... + 3577.

It is an arithmetic number, because the mean of its divisors is an integer number (42660).

2¹⁶³⁵⁰⁷ is an apocalyptic number.

163507 is a deficient number, since it is larger than the sum of its proper divisors (7133).

163507 is an equidigital number, since it uses as much as digits as its factorization.

163507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 163507 is about 404.3599881294. The cubic root of 163507 is about 54.6821334054.

Adding to 163507 its reverse (705361), we get a palindrome (868868).

The spelling of 163507 in words is "one hundred sixty-three thousand, five hundred seven".