136641208 has 32 divisors (see below), whose sum is σ = 284776560. Its totient is φ = 60935680.

The previous prime is 136641203. The next prime is 136641221. The reversal of 136641208 is 802146631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 136641208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136641203) 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 7 ways as a sum of consecutive naturals, for example, 9985 + ... + 19312.

Almost surely, 2^136641208 is an apocalyptic number.

It is an amenable number.

136641208 is an abundant number, since it is smaller than the sum of its proper divisors (148135352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136641208 is a wasteful number, since it uses less digits than its factorization.

136641208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29367 (or 29363 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 136641208 is about 11689.3630279840. The cubic root of 136641208 is about 515.0632504713.

Adding to 136641208 its reverse (802146631), we get a palindrome (938787839).

The spelling of 136641208 in words is "one hundred thirty-six million, six hundred forty-one thousand, two hundred eight".