163465 has 4 divisors (see below), whose sum is σ = 196164. Its totient is φ = 130768.

The previous prime is 163433. The next prime is 163469. The reversal of 163465 is 564361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24336 + 139129 = 156^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 163465 - 2⁵ = 163433 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (163469) 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, 16342 + ... + 16351.

It is an arithmetic number, because the mean of its divisors is an integer number (49041).

2¹⁶³⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

163465 is a deficient number, since it is larger than the sum of its proper divisors (32699).

163465 is an equidigital number, since it uses as much as digits as its factorization.

163465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32698.

The product of its digits is 2160, while the sum is 25.

The square root of 163465 is about 404.3080508721. The cubic root of 163465 is about 54.6774509427.

It can be divided in two parts, 16 and 3465, that added together give a square (3481 = 59²).

The spelling of 163465 in words is "one hundred sixty-three thousand, four hundred sixty-five".