136223761 has 2 divisors, whose sum is σ = 136223762. Its totient is φ = 136223760.

The previous prime is 136223741. The next prime is 136223777. The reversal of 136223761 is 167322631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 6969600 = 11369^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 136223761 - 2¹⁷ = 136092689 is a prime.

It is not a weakly prime, because it can be changed into another prime (136223741) 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, 68111880 + 68111881.

It is an arithmetic number, because the mean of its divisors is an integer number (68111881).

Almost surely, 2^136223761 is an apocalyptic number.

It is an amenable number.

136223761 is a deficient number, since it is larger than the sum of its proper divisors (1).

136223761 is an equidigital number, since it uses as much as digits as its factorization.

136223761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 136223761 is about 11671.4935205397. The cubic root of 136223761 is about 514.5381991539.

The spelling of 136223761 in words is "one hundred thirty-six million, two hundred twenty-three thousand, seven hundred sixty-one".