135239564 has 18 divisors (see below), whose sum is σ = 240998940. Its totient is φ = 66385872.

The previous prime is 135239561. The next prime is 135239591. The reversal of 135239564 is 465932531.

135239564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (135239561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178274 + ... + 179030.

It is an arithmetic number, because the mean of its divisors is an integer number (13388830).

Almost surely, 2^135239564 is an apocalyptic number.

It is an amenable number.

135239564 is a deficient number, since it is larger than the sum of its proper divisors (105759376).

135239564 is an frugal number, since it uses more digits than its factorization.

135239564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 818 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 135239564 is about 11629.2546622731. The cubic root of 135239564 is about 513.2960481530.

The spelling of 135239564 in words is "one hundred thirty-five million, two hundred thirty-nine thousand, five hundred sixty-four".