135216664 has 16 divisors (see below), whose sum is σ = 276579720. Its totient is φ = 61462080.

The previous prime is 135216661. The next prime is 135216677. The reversal of 135216664 is 466612531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135216661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768189 + ... + 768364.

Almost surely, 2^135216664 is an apocalyptic number.

It is an amenable number.

135216664 is an abundant number, since it is smaller than the sum of its proper divisors (141363056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135216664 is a wasteful number, since it uses less digits than its factorization.

135216664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536570 (or 1536566 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 135216664 is about 11628.2700347042. The cubic root of 135216664 is about 513.2670745236.

The spelling of 135216664 in words is "one hundred thirty-five million, two hundred sixteen thousand, six hundred sixty-four".