136248687 has 12 divisors (see below), whose sum is σ = 196911000. Its totient is φ = 90782928.

The previous prime is 136248683. The next prime is 136248701. The reversal of 136248687 is 786842631.

136248687 is a `hidden beast` number, since 13 + 624 + 8 + 6 + 8 + 7 = 666.

It is not a de Polignac number, because 136248687 - 2² = 136248683 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136248683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21988 + ... + 27494.

It is an arithmetic number, because the mean of its divisors is an integer number (16409250).

Almost surely, 2^136248687 is an apocalyptic number.

136248687 is a deficient number, since it is larger than the sum of its proper divisors (60662313).

136248687 is a wasteful number, since it uses less digits than its factorization.

136248687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262 (or 8259 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 136248687 is about 11672.5612870526. The cubic root of 136248687 is about 514.5695803580.

The spelling of 136248687 in words is "one hundred thirty-six million, two hundred forty-eight thousand, six hundred eighty-seven".