136560397 has 4 divisors (see below), whose sum is σ = 138875040. Its totient is φ = 134245756.

The previous prime is 136560343. The next prime is 136560401. The reversal of 136560397 is 793065631.

136560397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 136560397 - 2¹¹ = 136558349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136560317) 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, 1157233 + ... + 1157350.

It is an arithmetic number, because the mean of its divisors is an integer number (34718760).

Almost surely, 2^136560397 is an apocalyptic number.

It is an amenable number.

136560397 is a deficient number, since it is larger than the sum of its proper divisors (2314643).

136560397 is an equidigital number, since it uses as much as digits as its factorization.

136560397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314642.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 136560397 is about 11685.9059126796. The cubic root of 136560397 is about 514.9616925665.

The spelling of 136560397 in words is "one hundred thirty-six million, five hundred sixty thousand, three hundred ninety-seven".