136803385 has 8 divisors (see below), whose sum is σ = 164631240. Its totient is φ = 109131264.

The previous prime is 136803377. The next prime is 136803391. The reversal of 136803385 is 583308631.

It can be written as a sum of positive squares in 4 ways, for example, as 45333289 + 91470096 = 6733^2 + 9564^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 136803385 - 2³ = 136803377 is a prime.

It is a super-2 number, since 2×136803385² = 37430332294916450, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 36990 + ... + 40519.

It is an arithmetic number, because the mean of its divisors is an integer number (20578905).

Almost surely, 2^136803385 is an apocalyptic number.

It is an amenable number.

136803385 is a deficient number, since it is larger than the sum of its proper divisors (27827855).

136803385 is an equidigital number, since it uses as much as digits as its factorization.

136803385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77867.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 136803385 is about 11696.2979185724. The cubic root of 136803385 is about 515.2669430188.

The spelling of 136803385 in words is "one hundred thirty-six million, eight hundred three thousand, three hundred eighty-five".