136248887 has 4 divisors (see below), whose sum is σ = 136272240. Its totient is φ = 136225536.

The previous prime is 136248883. The next prime is 136248901. The reversal of 136248887 is 788842631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 788842631 = 2297 ⋅343423.

It is a cyclic number.

It is not a de Polignac number, because 136248887 - 2² = 136248883 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 (136248883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5414 + ... + 17372.

It is an arithmetic number, because the mean of its divisors is an integer number (34068060).

Almost surely, 2^136248887 is an apocalyptic number.

136248887 is a deficient number, since it is larger than the sum of its proper divisors (23353).

136248887 is a wasteful number, since it uses less digits than its factorization.

136248887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352.

The product of its digits is 516096, while the sum is 47.

The square root of 136248887 is about 11672.5698541495. The cubic root of 136248887 is about 514.5698321375.

The spelling of 136248887 in words is "one hundred thirty-six million, two hundred forty-eight thousand, eight hundred eighty-seven".