135566790 has 16 divisors (see below), whose sum is σ = 325360368. Its totient is φ = 36151136.

The previous prime is 135566777. The next prime is 135566797. The reversal of 135566790 is 97665531.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135566797) 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, 2259417 + ... + 2259476.

It is an arithmetic number, because the mean of its divisors is an integer number (20335023).

Almost surely, 2^135566790 is an apocalyptic number.

135566790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135566790 is an abundant number, since it is smaller than the sum of its proper divisors (189793578).

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

135566790 is a wasteful number, since it uses less digits than its factorization.

135566790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518903.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 135566790 is about 11643.3152495327. The cubic root of 135566790 is about 513.7097055201.

The spelling of 135566790 in words is "one hundred thirty-five million, five hundred sixty-six thousand, seven hundred ninety".