136865481 has 8 divisors (see below), whose sum is σ = 182571360. Its totient is φ = 91201632.

The previous prime is 136865461. The next prime is 136865537. The reversal of 136865481 is 184568631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136865481 - 2¹⁰ = 136864457 is a prime.

It is a super-2 number, since 2×136865481² = 37464319778722722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136865401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900 + ... + 16653.

It is an arithmetic number, because the mean of its divisors is an integer number (22821420).

Almost surely, 2^136865481 is an apocalyptic number.

It is an amenable number.

136865481 is a deficient number, since it is larger than the sum of its proper divisors (45705879).

136865481 is a wasteful number, since it uses less digits than its factorization.

136865481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21015.

The product of its digits is 138240, while the sum is 42.

The square root of 136865481 is about 11698.9521325630. The cubic root of 136865481 is about 515.3448922992.

The spelling of 136865481 in words is "one hundred thirty-six million, eight hundred sixty-five thousand, four hundred eighty-one".