136603161 has 12 divisors (see below), whose sum is σ = 198499392. Its totient is φ = 90522456.

The previous prime is 136603157. The next prime is 136603199. The reversal of 136603161 is 161306631.

It is a happy number.

It is not a de Polignac number, because 136603161 - 2² = 136603157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136603121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43941 + ... + 46946.

It is an arithmetic number, because the mean of its divisors is an integer number (16541616).

Almost surely, 2^136603161 is an apocalyptic number.

It is an amenable number.

136603161 is a deficient number, since it is larger than the sum of its proper divisors (61896231).

136603161 is a wasteful number, since it uses less digits than its factorization.

136603161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91060 (or 91057 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 136603161 is about 11687.7354949537. The cubic root of 136603161 is about 515.0154405149.

Adding to 136603161 its reverse (161306631), we get a palindrome (297909792).

The spelling of 136603161 in words is "one hundred thirty-six million, six hundred three thousand, one hundred sixty-one".