136380785 has 8 divisors (see below), whose sum is σ = 164562216. Its totient is φ = 108501120.

The previous prime is 136380773. The next prime is 136380791. The reversal of 136380785 is 587083631.

It can be written as a sum of positive squares in 4 ways, for example, as 3301489 + 133079296 = 1817^2 + 11536^2 .

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

It is not a de Polignac number, because 136380785 - 2⁸ = 136380529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74444 + ... + 76253.

It is an arithmetic number, because the mean of its divisors is an integer number (20570277).

Almost surely, 2^136380785 is an apocalyptic number.

It is an amenable number.

136380785 is a deficient number, since it is larger than the sum of its proper divisors (28181431).

136380785 is a wasteful number, since it uses less digits than its factorization.

136380785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150883.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 136380785 is about 11678.2184000814. The cubic root of 136380785 is about 514.7358245451.

The spelling of 136380785 in words is "one hundred thirty-six million, three hundred eighty thousand, seven hundred eighty-five".