135608649 has 16 divisors (see below), whose sum is σ = 197526720. Its totient is φ = 82071360.

The previous prime is 135608647. The next prime is 135608653. The reversal of 135608649 is 946806531.

It is not a de Polignac number, because 135608649 - 2¹ = 135608647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135608649.

It is not an unprimeable number, because it can be changed into a prime (135608647) 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 15 ways as a sum of consecutive naturals, for example, 24879 + ... + 29835.

It is an arithmetic number, because the mean of its divisors is an integer number (12345420).

Almost surely, 2^135608649 is an apocalyptic number.

It is an amenable number.

135608649 is a deficient number, since it is larger than the sum of its proper divisors (61918071).

135608649 is a wasteful number, since it uses less digits than its factorization.

135608649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 135608649 is about 11645.1126658354. The cubic root of 135608649 is about 513.7625728478.

The spelling of 135608649 in words is "one hundred thirty-five million, six hundred eight thousand, six hundred forty-nine".