135615644 has 6 divisors (see below), whose sum is σ = 237327384. Its totient is φ = 67807820.

The previous prime is 135615637. The next prime is 135615661. The reversal of 135615644 is 446516531.

135615644 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16951952 + ... + 16951959.

It is an arithmetic number, because the mean of its divisors is an integer number (39554564).

Almost surely, 2^135615644 is an apocalyptic number.

It is an amenable number.

135615644 is a deficient number, since it is larger than the sum of its proper divisors (101711740).

135615644 is a wasteful number, since it uses less digits than its factorization.

135615644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33903915 (or 33903913 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 135615644 is about 11645.4130025517. The cubic root of 135615644 is about 513.7714063734.

The spelling of 135615644 in words is "one hundred thirty-five million, six hundred fifteen thousand, six hundred forty-four".