136542647 has 4 divisors (see below), whose sum is σ = 137109456. Its totient is φ = 135975840.

The previous prime is 136542629. The next prime is 136542667. The reversal of 136542647 is 746245631.

It is a happy number.

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 136542647 - 2⁸ = 136542391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136542647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136542667) 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, 283043 + ... + 283524.

It is an arithmetic number, because the mean of its divisors is an integer number (34277364).

Almost surely, 2^136542647 is an apocalyptic number.

136542647 is a deficient number, since it is larger than the sum of its proper divisors (566809).

136542647 is an equidigital number, since it uses as much as digits as its factorization.

136542647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566808.

The product of its digits is 120960, while the sum is 38.

The square root of 136542647 is about 11685.1464261258. The cubic root of 136542647 is about 514.9393801775.

The spelling of 136542647 in words is "one hundred thirty-six million, five hundred forty-two thousand, six hundred forty-seven".