136816947 has 6 divisors (see below), whose sum is σ = 197624492. Its totient is φ = 91211292.

The previous prime is 136816943. The next prime is 136816957. The reversal of 136816947 is 749618631.

It is a happy number.

It is not a de Polignac number, because 136816947 - 2² = 136816943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136816943) 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 5 ways as a sum of consecutive naturals, for example, 7600933 + ... + 7600950.

Almost surely, 2^136816947 is an apocalyptic number.

136816947 is a deficient number, since it is larger than the sum of its proper divisors (60807545).

136816947 is a wasteful number, since it uses less digits than its factorization.

136816947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15201889 (or 15201886 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 136816947 is about 11696.8776602989. The cubic root of 136816947 is about 515.2839694478.

The spelling of 136816947 in words is "one hundred thirty-six million, eight hundred sixteen thousand, nine hundred forty-seven".