136177729 has 2 divisors, whose sum is σ = 136177730. Its totient is φ = 136177728.

The previous prime is 136177709. The next prime is 136177763. The reversal of 136177729 is 927771631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 45927729 = 9500^2 + 6777^2 .

It is a cyclic number.

It is not a de Polignac number, because 136177729 - 2¹⁵ = 136144961 is a prime.

It is not a weakly prime, because it can be changed into another prime (136177709) 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, 68088864 + 68088865.

It is an arithmetic number, because the mean of its divisors is an integer number (68088865).

Almost surely, 2^136177729 is an apocalyptic number.

It is an amenable number.

136177729 is a deficient number, since it is larger than the sum of its proper divisors (1).

136177729 is an equidigital number, since it uses as much as digits as its factorization.

136177729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 136177729 is about 11669.5213697906. The cubic root of 136177729 is about 514.4802359650.

The spelling of 136177729 in words is "one hundred thirty-six million, one hundred seventy-seven thousand, seven hundred twenty-nine".