136766537 has 2 divisors, whose sum is σ = 136766538. Its totient is φ = 136766536.

The previous prime is 136766527. The next prime is 136766549. The reversal of 136766537 is 735667631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117852736 + 18913801 = 10856^2 + 4349^2 .

It is a cyclic number.

It is not a de Polignac number, because 136766537 - 2¹⁰ = 136765513 is a prime.

It is not a weakly prime, because it can be changed into another prime (136766507) 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 as a sum of consecutive naturals, namely, 68383268 + 68383269.

It is an arithmetic number, because the mean of its divisors is an integer number (68383269).

Almost surely, 2^136766537 is an apocalyptic number.

It is an amenable number.

136766537 is a deficient number, since it is larger than the sum of its proper divisors (1).

136766537 is an equidigital number, since it uses as much as digits as its factorization.

136766537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 44.

The square root of 136766537 is about 11694.7226132132. The cubic root of 136766537 is about 515.2206764705.

The spelling of 136766537 in words is "one hundred thirty-six million, seven hundred sixty-six thousand, five hundred thirty-seven".