136723529 has 2 divisors, whose sum is σ = 136723530. Its totient is φ = 136723528.

The previous prime is 136723511. The next prime is 136723549. The reversal of 136723529 is 925327631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133356304 + 3367225 = 11548^2 + 1835^2 .

It is a cyclic number.

It is not a de Polignac number, because 136723529 - 2¹² = 136719433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136723492 and 136723501.

It is not a weakly prime, because it can be changed into another prime (136723549) 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, 68361764 + 68361765.

It is an arithmetic number, because the mean of its divisors is an integer number (68361765).

Almost surely, 2^136723529 is an apocalyptic number.

It is an amenable number.

136723529 is a deficient number, since it is larger than the sum of its proper divisors (1).

136723529 is an equidigital number, since it uses as much as digits as its factorization.

136723529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 136723529 is about 11692.8836905188. The cubic root of 136723529 is about 515.1666648815.

The spelling of 136723529 in words is "one hundred thirty-six million, seven hundred twenty-three thousand, five hundred twenty-nine".