136769645 has 16 divisors (see below), whose sum is σ = 168542640. Its totient is φ = 106483200.

The previous prime is 136769629. The next prime is 136769651. The reversal of 136769645 is 546967631.

It can be written as a sum of positive squares in 8 ways, for example, as 31214569 + 105555076 = 5587^2 + 10274^2 .

It is not a de Polignac number, because 136769645 - 2⁴ = 136769629 is a prime.

It is a super-3 number, since 3×136769645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136769645.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 144875 + ... + 145815.

It is an arithmetic number, because the mean of its divisors is an integer number (10533915).

Almost surely, 2^136769645 is an apocalyptic number.

It is an amenable number.

136769645 is a deficient number, since it is larger than the sum of its proper divisors (31772995).

136769645 is an equidigital number, since it uses as much as digits as its factorization.

136769645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its digits is 816480, while the sum is 47.

The square root of 136769645 is about 11694.8554929080. The cubic root of 136769645 is about 515.2245792130.

The spelling of 136769645 in words is "one hundred thirty-six million, seven hundred sixty-nine thousand, six hundred forty-five".