136734761 has 4 divisors (see below), whose sum is σ = 136894800. Its totient is φ = 136574724.

The previous prime is 136734743. The next prime is 136734779. The reversal of 136734761 is 167437631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 167437631 = 23 ⋅7279897.

It is an interprime number because it is at equal distance from previous prime (136734743) and next prime (136734779).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136734761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136734061) 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, 78731 + ... + 80448.

It is an arithmetic number, because the mean of its divisors is an integer number (34223700).

Almost surely, 2^136734761 is an apocalyptic number.

It is an amenable number.

136734761 is a deficient number, since it is larger than the sum of its proper divisors (160039).

136734761 is an equidigital number, since it uses as much as digits as its factorization.

136734761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160038.

The product of its digits is 63504, while the sum is 38.

The square root of 136734761 is about 11693.3639727839. The cubic root of 136734761 is about 515.1807716793.

The spelling of 136734761 in words is "one hundred thirty-six million, seven hundred thirty-four thousand, seven hundred sixty-one".