136551605 has 8 divisors (see below), whose sum is σ = 163924992. Its totient is φ = 109199248.

The previous prime is 136551601. The next prime is 136551629. The reversal of 136551605 is 506155631.

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 136551605 - 2² = 136551601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136551601) 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 7 ways as a sum of consecutive naturals, for example, 20612 + ... + 26418.

It is an arithmetic number, because the mean of its divisors is an integer number (20490624).

Almost surely, 2^136551605 is an apocalyptic number.

It is an amenable number.

136551605 is a deficient number, since it is larger than the sum of its proper divisors (27373387).

136551605 is an equidigital number, since it uses as much as digits as its factorization.

136551605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 136551605 is about 11685.5297269743. The cubic root of 136551605 is about 514.9506409476.

The spelling of 136551605 in words is "one hundred thirty-six million, five hundred fifty-one thousand, six hundred five".