136781363 has 4 divisors (see below), whose sum is σ = 136834920. Its totient is φ = 136727808.

The previous prime is 136781357. The next prime is 136781369. The reversal of 136781363 is 363187631.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (136781357) and next prime (136781369).

It is a cyclic number.

It is not a de Polignac number, because 136781363 - 2¹⁶ = 136715827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136781369) 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, 22745 + ... + 28122.

It is an arithmetic number, because the mean of its divisors is an integer number (34208730).

Almost surely, 2^136781363 is an apocalyptic number.

136781363 is a deficient number, since it is larger than the sum of its proper divisors (53557).

136781363 is an equidigital number, since it uses as much as digits as its factorization.

136781363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53556.

The product of its digits is 54432, while the sum is 38.

The square root of 136781363 is about 11695.3564716942. The cubic root of 136781363 is about 515.2392930754.

The spelling of 136781363 in words is "one hundred thirty-six million, seven hundred eighty-one thousand, three hundred sixty-three".