136257745 has 8 divisors (see below), whose sum is σ = 176087016. Its totient is φ = 100621056.

The previous prime is 136257691. The next prime is 136257763. The reversal of 136257745 is 547752631.

It can be written as a sum of positive squares in 4 ways, for example, as 208849 + 136048896 = 457^2 + 11664^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136257745 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136257698 and 136257707.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1048072 + ... + 1048201.

It is an arithmetic number, because the mean of its divisors is an integer number (22010877).

Almost surely, 2^136257745 is an apocalyptic number.

It is an amenable number.

136257745 is a deficient number, since it is larger than the sum of its proper divisors (39829271).

136257745 is a wasteful number, since it uses less digits than its factorization.

136257745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096291.

The product of its digits is 176400, while the sum is 40.

The square root of 136257745 is about 11672.9492845639. The cubic root of 136257745 is about 514.5809832030.

The spelling of 136257745 in words is "one hundred thirty-six million, two hundred fifty-seven thousand, seven hundred forty-five".