136686090 has 16 divisors (see below), whose sum is σ = 328046688. Its totient is φ = 36449616.

The previous prime is 136686083. The next prime is 136686091. The reversal of 136686090 is 90686631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (136686091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2278072 + ... + 2278131.

It is an arithmetic number, because the mean of its divisors is an integer number (20502918).

Almost surely, 2^136686090 is an apocalyptic number.

136686090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136686090 is an abundant number, since it is smaller than the sum of its proper divisors (191360598).

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

136686090 is a wasteful number, since it uses less digits than its factorization.

136686090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556213.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 136686090 is about 11691.2826499063. The cubic root of 136686090 is about 515.1196378978.

The spelling of 136686090 in words is "one hundred thirty-six million, six hundred eighty-six thousand, ninety".