136036657 has 4 divisors (see below), whose sum is σ = 137758720. Its totient is φ = 134314596.

The previous prime is 136036643. The next prime is 136036661. The reversal of 136036657 is 756630631.

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: 756630631 = 641 ⋅1180391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136036657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136036627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860913 + ... + 861070.

It is an arithmetic number, because the mean of its divisors is an integer number (34439680).

Almost surely, 2^136036657 is an apocalyptic number.

It is an amenable number.

136036657 is a deficient number, since it is larger than the sum of its proper divisors (1722063).

136036657 is an equidigital number, since it uses as much as digits as its factorization.

136036657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722062.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 136036657 is about 11663.4753397090. The cubic root of 136036657 is about 514.3025176425.

The spelling of 136036657 in words is "one hundred thirty-six million, thirty-six thousand, six hundred fifty-seven".