136785097 has 4 divisors (see below), whose sum is σ = 137054340. Its totient is φ = 136515856.

The previous prime is 136785073. The next prime is 136785149. The reversal of 136785097 is 790587631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790587631 = 3527 ⋅224153.

It can be written as a sum of positive squares in 2 ways, for example, as 125081856 + 11703241 = 11184^2 + 3421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136785097 is a prime.

It is a super-2 number, since 2×136785097² = 37420325522598818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136785497) 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, 133858 + ... + 134875.

It is an arithmetic number, because the mean of its divisors is an integer number (34263585).

Almost surely, 2^136785097 is an apocalyptic number.

It is an amenable number.

136785097 is a deficient number, since it is larger than the sum of its proper divisors (269243).

136785097 is an equidigital number, since it uses as much as digits as its factorization.

136785097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269242.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 136785097 is about 11695.5161066111. The cubic root of 136785097 is about 515.2439815456.

The spelling of 136785097 in words is "one hundred thirty-six million, seven hundred eighty-five thousand, ninety-seven".