136837 has 4 divisors (see below), whose sum is σ = 137740. Its totient is φ = 135936.

The previous prime is 136813. The next prime is 136841. The reversal of 136837 is 738631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 738631 = 37 ⋅19963.

It can be written as a sum of positive squares in 2 ways, for example, as 25281 + 111556 = 159^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 136837 - 2⁷ = 136709 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 (136897) 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, 162 + ... + 547.

It is an arithmetic number, because the mean of its divisors is an integer number (34435).

2¹³⁶⁸³⁷ is an apocalyptic number.

It is an amenable number.

136837 is a deficient number, since it is larger than the sum of its proper divisors (903).

136837 is an equidigital number, since it uses as much as digits as its factorization.

136837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its digits is 3024, while the sum is 28.

The square root of 136837 is about 369.9148550680. The cubic root of 136837 is about 51.5309142949.

The spelling of 136837 in words is "one hundred thirty-six thousand, eight hundred thirty-seven".