136684619 has 2 divisors, whose sum is σ = 136684620. Its totient is φ = 136684618.

The previous prime is 136684567. The next prime is 136684621. The reversal of 136684619 is 916486631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136684619 is a prime.

It is a super-2 number, since 2×136684619² = 37365370142350322, which contains 22 as substring.

Together with 136684621, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136684619.

It is not a weakly prime, because it can be changed into another prime (136686619) 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 as a sum of consecutive naturals, namely, 68342309 + 68342310.

It is an arithmetic number, because the mean of its divisors is an integer number (68342310).

Almost surely, 2^136684619 is an apocalyptic number.

136684619 is a deficient number, since it is larger than the sum of its proper divisors (1).

136684619 is an equidigital number, since it uses as much as digits as its factorization.

136684619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 136684619 is about 11691.2197396166. The cubic root of 136684619 is about 515.1177900051.

The spelling of 136684619 in words is "one hundred thirty-six million, six hundred eighty-four thousand, six hundred nineteen".