164969 has 4 divisors (see below), whose sum is σ = 188544. Its totient is φ = 141396.

The previous prime is 164963. The next prime is 164987. The reversal of 164969 is 969461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164969 - 2⁴ = 164953 is a prime.

It is a super-2 number, since 2×164969² = 54429541922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11777 + ... + 11790.

It is an arithmetic number, because the mean of its divisors is an integer number (47136).

2¹⁶⁴⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

164969 is a deficient number, since it is larger than the sum of its proper divisors (23575).

164969 is an equidigital number, since it uses as much as digits as its factorization.

164969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23574.

The product of its digits is 11664, while the sum is 35.

The square root of 164969 is about 406.1637600771. The cubic root of 164969 is about 54.8446303798.

The spelling of 164969 in words is "one hundred sixty-four thousand, nine hundred sixty-nine".