136880605 has 4 divisors (see below), whose sum is σ = 164256732. Its totient is φ = 109504480.

The previous prime is 136880587. The next prime is 136880633. The reversal of 136880605 is 506088631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506088631 = 739 ⋅684829.

It can be written as a sum of positive squares in 2 ways, for example, as 90136036 + 46744569 = 9494^2 + 6837^2 .

It is not a de Polignac number, because 136880605 - 2⁵ = 136880573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13688056 + ... + 13688065.

It is an arithmetic number, because the mean of its divisors is an integer number (41064183).

Almost surely, 2^136880605 is an apocalyptic number.

It is an amenable number.

136880605 is a deficient number, since it is larger than the sum of its proper divisors (27376127).

136880605 is an equidigital number, since it uses as much as digits as its factorization.

136880605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27376126.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 136880605 is about 11699.5984973844. The cubic root of 136880605 is about 515.3638739275.

The spelling of 136880605 in words is "one hundred thirty-six million, eight hundred eighty thousand, six hundred five".