136927643 has 4 divisors (see below), whose sum is σ = 136954368. Its totient is φ = 136900920.

The previous prime is 136927627. The next prime is 136927697. The reversal of 136927643 is 346729631.

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 136927643 - 2⁴ = 136927627 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 136927643.

It is not an unprimeable number, because it can be changed into a prime (136921643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2996 + ... + 16817.

It is an arithmetic number, because the mean of its divisors is an integer number (34238592).

Almost surely, 2^136927643 is an apocalyptic number.

136927643 is a deficient number, since it is larger than the sum of its proper divisors (26725).

136927643 is an equidigital number, since it uses as much as digits as its factorization.

136927643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26724.

The product of its digits is 163296, while the sum is 41.

The square root of 136927643 is about 11701.6085646376. The cubic root of 136927643 is about 515.4229008184.

The spelling of 136927643 in words is "one hundred thirty-six million, nine hundred twenty-seven thousand, six hundred forty-three".