66435136 has 28 divisors (see below), whose sum is σ = 132812028. Its totient is φ = 32970752.

The previous prime is 66435071. The next prime is 66435137. The reversal of 66435136 is 63153466.

66435136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14017536 + 52417600 = 3744^2 + 7240^2 .

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (66435137) 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, 4980 + ... + 12556.

Almost surely, 2^66435136 is an apocalyptic number.

It is an amenable number.

66435136 is a deficient number, since it is larger than the sum of its proper divisors (66376892).

66435136 is a wasteful number, since it uses less digits than its factorization.

66435136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726 (or 7716 counting only the distinct ones).

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

The square root of 66435136 is about 8150.7751778589. The cubic root of 66435136 is about 405.0101831510.

The spelling of 66435136 in words is "sixty-six million, four hundred thirty-five thousand, one hundred thirty-six".