136991612 has 12 divisors (see below), whose sum is σ = 246214920. Its totient is φ = 66644496.

The previous prime is 136991597. The next prime is 136991629. The reversal of 136991612 is 216199631.

136991612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 462662 + ... + 462957.

It is an arithmetic number, because the mean of its divisors is an integer number (20517910).

Almost surely, 2^136991612 is an apocalyptic number.

It is an amenable number.

136991612 is a deficient number, since it is larger than the sum of its proper divisors (109223308).

136991612 is a wasteful number, since it uses less digits than its factorization.

136991612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925660 (or 925658 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The square root of 136991612 is about 11704.3415876332. The cubic root of 136991612 is about 515.5031523385.

The spelling of 136991612 in words is "one hundred thirty-six million, nine hundred ninety-one thousand, six hundred twelve".