136569 has 4 divisors (see below), whose sum is σ = 182096. Its totient is φ = 91044.

The previous prime is 136559. The next prime is 136573. The reversal of 136569 is 965631.

It is a happy number.

136569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 136569 - 2⁵ = 136537 is a prime.

It is a super-2 number, since 2×136569² = 37302183522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (136519) 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, 22759 + ... + 22764.

It is an arithmetic number, because the mean of its divisors is an integer number (45524).

2¹³⁶⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

136569 is a deficient number, since it is larger than the sum of its proper divisors (45527).

136569 is an equidigital number, since it uses as much as digits as its factorization.

136569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45526.

The product of its digits is 4860, while the sum is 30.

The square root of 136569 is about 369.5524320039. The cubic root of 136569 is about 51.4972506152.

The spelling of 136569 in words is "one hundred thirty-six thousand, five hundred sixty-nine".