136730287 has 4 divisors (see below), whose sum is σ = 137029936. Its totient is φ = 136430640.

The previous prime is 136730267. The next prime is 136730311. The reversal of 136730287 is 782037631.

136730287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136730287 - 2¹¹ = 136728239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136730267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149139 + ... + 150052.

It is an arithmetic number, because the mean of its divisors is an integer number (34257484).

Almost surely, 2^136730287 is an apocalyptic number.

136730287 is a deficient number, since it is larger than the sum of its proper divisors (299649).

136730287 is an equidigital number, since it uses as much as digits as its factorization.

136730287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299648.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 136730287 is about 11693.1726661330. The cubic root of 136730287 is about 515.1751526646.

The spelling of 136730287 in words is "one hundred thirty-six million, seven hundred thirty thousand, two hundred eighty-seven".