136661193 has 12 divisors (see below), whose sum is σ = 205982400. Its totient is φ = 87146136.

The previous prime is 136661171. The next prime is 136661207. The reversal of 136661193 is 391166631.

It is not a de Polignac number, because 136661193 - 2¹⁰ = 136660169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136661293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329893 + ... + 330306.

It is an arithmetic number, because the mean of its divisors is an integer number (17165200).

Almost surely, 2^136661193 is an apocalyptic number.

It is an amenable number.

136661193 is a deficient number, since it is larger than the sum of its proper divisors (69321207).

136661193 is a wasteful number, since it uses less digits than its factorization.

136661193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660228 (or 660225 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 136661193 is about 11690.2178337275. The cubic root of 136661193 is about 515.0883601178.

The spelling of 136661193 in words is "one hundred thirty-six million, six hundred sixty-one thousand, one hundred ninety-three".