136549 has 4 divisors (see below), whose sum is σ = 156064. Its totient is φ = 117036.

The previous prime is 136547. The next prime is 136559. The reversal of 136549 is 945631.

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 136549 - 2¹ = 136547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136541) 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, 9747 + ... + 9760.

It is an arithmetic number, because the mean of its divisors is an integer number (39016).

2¹³⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

136549 is a deficient number, since it is larger than the sum of its proper divisors (19515).

136549 is an equidigital number, since it uses as much as digits as its factorization.

136549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19514.

The product of its digits is 3240, while the sum is 28.

The square root of 136549 is about 369.5253712534. The cubic root of 136549 is about 51.4947366349.

The spelling of 136549 in words is "one hundred thirty-six thousand, five hundred forty-nine".