135644624 has 10 divisors (see below), whose sum is σ = 262811490. Its totient is φ = 67822304.

The previous prime is 135644609. The next prime is 135644651. The reversal of 135644624 is 426446531.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 61340224 = 8620^2 + 7832^2 .

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, 4238879 + ... + 4238910.

It is an arithmetic number, because the mean of its divisors is an integer number (26281149).

Almost surely, 2^135644624 is an apocalyptic number.

It is an amenable number.

135644624 is a deficient number, since it is larger than the sum of its proper divisors (127166866).

135644624 is an equidigital number, since it uses as much as digits as its factorization.

135644624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8477797 (or 8477791 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 135644624 is about 11646.6572028200. The cubic root of 135644624 is about 513.8080000742.

The spelling of 135644624 in words is "one hundred thirty-five million, six hundred forty-four thousand, six hundred twenty-four".