136782137 has 4 divisors (see below), whose sum is σ = 141194496. Its totient is φ = 132369780.

The previous prime is 136782133. The next prime is 136782143. The reversal of 136782137 is 731287631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731287631 = 157 ⋅4657883.

It is a cyclic number.

It is not a de Polignac number, because 136782137 - 2² = 136782133 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 136782137.

It is not an unprimeable number, because it can be changed into a prime (136782133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2206133 + ... + 2206194.

It is an arithmetic number, because the mean of its divisors is an integer number (35298624).

Almost surely, 2^136782137 is an apocalyptic number.

It is an amenable number.

136782137 is a deficient number, since it is larger than the sum of its proper divisors (4412359).

136782137 is an equidigital number, since it uses as much as digits as its factorization.

136782137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412358.

The product of its digits is 42336, while the sum is 38.

The square root of 136782137 is about 11695.3895617034. The cubic root of 136782137 is about 515.2402649292.

The spelling of 136782137 in words is "one hundred thirty-six million, seven hundred eighty-two thousand, one hundred thirty-seven".