136579 has 4 divisors (see below), whose sum is σ = 138880. Its totient is φ = 134280.

The previous prime is 136573. The next prime is 136601. The reversal of 136579 is 975631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975631 = 19 ⋅51349.

It is a cyclic number.

It is not a de Polignac number, because 136579 - 2⁵ = 136547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136579.

It is not an unprimeable number, because it can be changed into a prime (136573) 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, 1059 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (34720).

2¹³⁶⁵⁷⁹ is an apocalyptic number.

136579 is a deficient number, since it is larger than the sum of its proper divisors (2301).

136579 is an equidigital number, since it uses as much as digits as its factorization.

136579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its digits is 5670, while the sum is 31.

The square root of 136579 is about 369.5659616361. The cubic root of 136579 is about 51.4985075132.

It can be divided in two parts, 1365 and 79, that added together give a square (1444 = 38²).

The spelling of 136579 in words is "one hundred thirty-six thousand, five hundred seventy-nine".