135770 has 8 divisors (see below), whose sum is σ = 244404. Its totient is φ = 54304.

The previous prime is 135757. The next prime is 135781. The reversal of 135770 is 77531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 6889 = 359^2 + 83^2 .

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

It is an unprimeable number.

135770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6779 + ... + 6798.

2¹³⁵⁷⁷⁰ is an apocalyptic number.

135770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135770 is a deficient number, since it is larger than the sum of its proper divisors (108634).

135770 is a wasteful number, since it uses less digits than its factorization.

135770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13584.

The product of its (nonzero) digits is 735, while the sum is 23.

The square root of 135770 is about 368.4698088039. The cubic root of 135770 is about 51.3966255159.

The spelling of 135770 in words is "one hundred thirty-five thousand, seven hundred seventy".