135505870 has 16 divisors (see below), whose sum is σ = 246192048. Its totient is φ = 53695360.

The previous prime is 135505847. The next prime is 135505889. The reversal of 135505870 is 78505531.

135505870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62251 + ... + 64390.

It is an arithmetic number, because the mean of its divisors is an integer number (15387003).

Almost surely, 2^135505870 is an apocalyptic number.

135505870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135505870 is a deficient number, since it is larger than the sum of its proper divisors (110686178).

135505870 is a wasteful number, since it uses less digits than its factorization.

135505870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126755.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 135505870 is about 11640.6988621818. The cubic root of 135505870 is about 513.6327449701.

The spelling of 135505870 in words is "one hundred thirty-five million, five hundred five thousand, eight hundred seventy".