136068381 has 24 divisors (see below), whose sum is σ = 202203456. Its totient is φ = 88119360.

The previous prime is 136068371. The next prime is 136068397. The reversal of 136068381 is 183860631.

136068381 is a `hidden beast` number, since 13 + 606 + 8 + 38 + 1 = 666.

It is not a de Polignac number, because 136068381 - 2¹⁰ = 136067357 is a prime.

It is a super-2 number, since 2×136068381² = 37029208615922322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136068371) 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 23 ways as a sum of consecutive naturals, for example, 103776 + ... + 105078.

It is an arithmetic number, because the mean of its divisors is an integer number (8425144).

Almost surely, 2^136068381 is an apocalyptic number.

It is an amenable number.

136068381 is a deficient number, since it is larger than the sum of its proper divisors (66135075).

136068381 is a wasteful number, since it uses less digits than its factorization.

136068381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 136068381 is about 11664.8352324411. The cubic root of 136068381 is about 514.3424933013.

The spelling of 136068381 in words is "one hundred thirty-six million, sixty-eight thousand, three hundred eighty-one".