66535146 has 24 divisors (see below), whose sum is σ = 145217124. Its totient is φ = 22015680.

The previous prime is 66535129. The next prime is 66535151. The reversal of 66535146 is 64153566.

It can be written as a sum of positive squares in 2 ways, for example, as 64400625 + 2134521 = 8025^2 + 1461^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66535146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11025 + ... + 15956.

Almost surely, 2^66535146 is an apocalyptic number.

66535146 is an abundant number, since it is smaller than the sum of its proper divisors (78681978).

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

66535146 is a wasteful number, since it uses less digits than its factorization.

66535146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27126 (or 27123 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 66535146 is about 8156.9078700204. The cubic root of 66535146 is about 405.2133124120.

The spelling of 66535146 in words is "sixty-six million, five hundred thirty-five thousand, one hundred forty-six".