135621764 has 12 divisors (see below), whose sum is σ = 237595344. Its totient is φ = 67737384.

The previous prime is 135621763. The next prime is 135621779. The reversal of 135621764 is 467126531.

It is not an unprimeable number, because it can be changed into a prime (135621763) 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, 14114 + ... + 21689.

It is an arithmetic number, because the mean of its divisors is an integer number (19799612).

Almost surely, 2^135621764 is an apocalyptic number.

It is an amenable number.

135621764 is a deficient number, since it is larger than the sum of its proper divisors (101973580).

135621764 is a wasteful number, since it uses less digits than its factorization.

135621764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36754 (or 36752 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 135621764 is about 11645.6757639907. The cubic root of 135621764 is about 513.7791346699.

The spelling of 135621764 in words is "one hundred thirty-five million, six hundred twenty-one thousand, seven hundred sixty-four".