66135436 has 12 divisors (see below), whose sum is σ = 116031328. Its totient is φ = 32983632.

The previous prime is 66135427. The next prime is 66135437. The reversal of 66135436 is 63453166.

66135436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66135437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19236 + ... + 22411.

Almost surely, 2^66135436 is an apocalyptic number.

It is an amenable number.

66135436 is a deficient number, since it is larger than the sum of its proper divisors (49895892).

66135436 is a wasteful number, since it uses less digits than its factorization.

66135436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42048 (or 42046 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 66135436 is about 8132.3696423613. The cubic root of 66135436 is about 404.4002421760.

The spelling of 66135436 in words is "sixty-six million, one hundred thirty-five thousand, four hundred thirty-six".