136443745 has 8 divisors (see below), whose sum is σ = 163797480. Its totient is φ = 109111680.

The previous prime is 136443743. The next prime is 136443757. The reversal of 136443745 is 547344631.

It can be written as a sum of positive squares in 4 ways, for example, as 25120144 + 111323601 = 5012^2 + 10551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136443745 - 2¹ = 136443743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136443743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16525 + ... + 23365.

It is an arithmetic number, because the mean of its divisors is an integer number (20474685).

Almost surely, 2^136443745 is an apocalyptic number.

It is an amenable number.

136443745 is a deficient number, since it is larger than the sum of its proper divisors (27353735).

136443745 is an equidigital number, since it uses as much as digits as its factorization.

136443745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10835.

The product of its digits is 120960, while the sum is 37.

The square root of 136443745 is about 11680.9137056996. The cubic root of 136443745 is about 514.8150213855.

The spelling of 136443745 in words is "one hundred thirty-six million, four hundred forty-three thousand, seven hundred forty-five".