136387877 has 2 divisors, whose sum is σ = 136387878. Its totient is φ = 136387876.

The previous prime is 136387847. The next prime is 136387903. The reversal of 136387877 is 778783631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125305636 + 11082241 = 11194^2 + 3329^2 .

It is a cyclic number.

It is not a de Polignac number, because 136387877 - 2⁸ = 136387621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136387807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68193938 + 68193939.

It is an arithmetic number, because the mean of its divisors is an integer number (68193939).

Almost surely, 2^136387877 is an apocalyptic number.

It is an amenable number.

136387877 is a deficient number, since it is larger than the sum of its proper divisors (1).

136387877 is an equidigital number, since it uses as much as digits as its factorization.

136387877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The square root of 136387877 is about 11678.5220383403. The cubic root of 136387877 is about 514.7447467287.

The spelling of 136387877 in words is "one hundred thirty-six million, three hundred eighty-seven thousand, eight hundred seventy-seven".