135643960 has 64 divisors (see below), whose sum is σ = 314344800. Its totient is φ = 52655616.

The previous prime is 135643951. The next prime is 135643967. The reversal of 135643960 is 69346531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135643967) 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, 230787 + ... + 231373.

Almost surely, 2^135643960 is an apocalyptic number.

135643960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135643960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157172400).

135643960 is an abundant number, since it is smaller than the sum of its proper divisors (178700840).

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

135643960 is a wasteful number, since it uses less digits than its factorization.

135643960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 135643960 is about 11646.6286967517. The cubic root of 135643960 is about 513.8071616848.

The spelling of 135643960 in words is "one hundred thirty-five million, six hundred forty-three thousand, nine hundred sixty".