136800081 has 12 divisors (see below), whose sum is σ = 215563920. Its totient is φ = 82909080.

The previous prime is 136800077. The next prime is 136800101. The reversal of 136800081 is 180008631.

It is not a de Polignac number, because 136800081 - 2² = 136800077 is a prime.

It is a super-2 number, since 2×136800081² = 37428524323213122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136800011) 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 11 ways as a sum of consecutive naturals, for example, 690811 + ... + 691008.

It is an arithmetic number, because the mean of its divisors is an integer number (17963660).

Almost surely, 2^136800081 is an apocalyptic number.

136800081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136800081 is a deficient number, since it is larger than the sum of its proper divisors (78763839).

136800081 is a wasteful number, since it uses less digits than its factorization.

136800081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381836 (or 1381833 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 136800081 is about 11696.1566764472. The cubic root of 136800081 is about 515.2627948376.

The spelling of 136800081 in words is "one hundred thirty-six million, eight hundred thousand, eighty-one".