136478905 has 8 divisors (see below), whose sum is σ = 163949184. Its totient is φ = 109066800.

The previous prime is 136478897. The next prime is 136478911. The reversal of 136478905 is 509874631.

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

It is not a de Polignac number, because 136478905 - 2³ = 136478897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9201 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (20493648).

Almost surely, 2^136478905 is an apocalyptic number.

It is an amenable number.

136478905 is a deficient number, since it is larger than the sum of its proper divisors (27470279).

136478905 is an equidigital number, since it uses as much as digits as its factorization.

136478905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29087.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 136478905 is about 11682.4186280068. The cubic root of 136478905 is about 514.8592382447.

The spelling of 136478905 in words is "one hundred thirty-six million, four hundred seventy-eight thousand, nine hundred five".