136690 has 8 divisors (see below), whose sum is σ = 246060. Its totient is φ = 54672.

The previous prime is 136657. The next prime is 136691. The reversal of 136690 is 96631.

136690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 529 = 369^2 + 23^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×136690² = 37368312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136691) by changing a digit.

136690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6825 + ... + 6844.

2¹³⁶⁶⁹⁰ is an apocalyptic number.

136690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136690 is a deficient number, since it is larger than the sum of its proper divisors (109370).

136690 is a wasteful number, since it uses less digits than its factorization.

136690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13676.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 136690 is about 369.7161073040. The cubic root of 136690 is about 51.5124549635.

The spelling of 136690 in words is "one hundred thirty-six thousand, six hundred ninety".