135665226 has 32 divisors (see below), whose sum is σ = 303347520. Its totient is φ = 44941392.

The previous prime is 135665221. The next prime is 135665239. The reversal of 135665226 is 622566531.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135665221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1096 + ... + 16508.

It is an arithmetic number, because the mean of its divisors is an integer number (9479610).

Almost surely, 2^135665226 is an apocalyptic number.

135665226 is an abundant number, since it is smaller than the sum of its proper divisors (167682294).

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

135665226 is a wasteful number, since it uses less digits than its factorization.

135665226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15587 (or 15581 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 135665226 is about 11647.5416290306. The cubic root of 135665226 is about 513.8340115156.

The spelling of 135665226 in words is "one hundred thirty-five million, six hundred sixty-five thousand, two hundred twenty-six".