136686354 has 16 divisors (see below), whose sum is σ = 312426048. Its totient is φ = 39053232.

The previous prime is 136686343. The next prime is 136686359. The reversal of 136686354 is 453686631.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3254437 = 136686354 / (1 + 3 + 6 + 6 + 8 + 6 + 3 + 5 + 4).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136686359) 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, 1627177 + ... + 1627260.

It is an arithmetic number, because the mean of its divisors is an integer number (19526628).

Almost surely, 2^136686354 is an apocalyptic number.

136686354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

136686354 is an abundant number, since it is smaller than the sum of its proper divisors (175739694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136686354 is a wasteful number, since it uses less digits than its factorization.

136686354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254449.

The product of its digits is 311040, while the sum is 42.

The square root of 136686354 is about 11691.2939403643. The cubic root of 136686354 is about 515.1199695373.

The spelling of 136686354 in words is "one hundred thirty-six million, six hundred eighty-six thousand, three hundred fifty-four".