136369657 has 2 divisors, whose sum is σ = 136369658. Its totient is φ = 136369656.

The previous prime is 136369633. The next prime is 136369741. The reversal of 136369657 is 756963631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80658361 + 55711296 = 8981^2 + 7464^2 .

It is an emirp because it is prime and its reverse (756963631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136369657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136369357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68184828 + 68184829.

It is an arithmetic number, because the mean of its divisors is an integer number (68184829).

Almost surely, 2^136369657 is an apocalyptic number.

It is an amenable number.

136369657 is a deficient number, since it is larger than the sum of its proper divisors (1).

136369657 is an equidigital number, since it uses as much as digits as its factorization.

136369657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 46.

The square root of 136369657 is about 11677.7419478254. The cubic root of 136369657 is about 514.7218241954.

It can be divided in two parts, 136369 and 657, that added together give a triangular number (137026 = T₅₂₃).

The spelling of 136369657 in words is "one hundred thirty-six million, three hundred sixty-nine thousand, six hundred fifty-seven".