136559977 has 2 divisors, whose sum is σ = 136559978. Its totient is φ = 136559976.

The previous prime is 136559939. The next prime is 136559981. The reversal of 136559977 is 779955631.

It is a happy number.

136559977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134652816 + 1907161 = 11604^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 136559977 - 2¹¹ = 136557929 is a prime.

It is not a weakly prime, because it can be changed into another prime (136559987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68279988 + 68279989.

It is an arithmetic number, because the mean of its divisors is an integer number (68279989).

Almost surely, 2^136559977 is an apocalyptic number.

It is an amenable number.

136559977 is a deficient number, since it is larger than the sum of its proper divisors (1).

136559977 is an equidigital number, since it uses as much as digits as its factorization.

136559977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1786050, while the sum is 52.

The square root of 136559977 is about 11685.8879423003. The cubic root of 136559977 is about 514.9611646337.

It can be divided in two parts, 13655 and 9977, that added together give a palindrome (23632).

The spelling of 136559977 in words is "one hundred thirty-six million, five hundred fifty-nine thousand, nine hundred seventy-seven".