136706189 has 4 divisors (see below), whose sum is σ = 137611680. Its totient is φ = 135800700.

The previous prime is 136706183. The next prime is 136706201. The reversal of 136706189 is 981607631.

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 136706189 - 2²⁴ = 119928973 is a prime.

It is a super-2 number, since 2×136706189² = 37377164221807442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136706183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452519 + ... + 452820.

It is an arithmetic number, because the mean of its divisors is an integer number (34402920).

Almost surely, 2^136706189 is an apocalyptic number.

It is an amenable number.

136706189 is a deficient number, since it is larger than the sum of its proper divisors (905491).

136706189 is an equidigital number, since it uses as much as digits as its factorization.

136706189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905490.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 136706189 is about 11692.1421903773. The cubic root of 136706189 is about 515.1448852418.

The spelling of 136706189 in words is "one hundred thirty-six million, seven hundred six thousand, one hundred eighty-nine".