66285436 has 24 divisors (see below), whose sum is σ = 135279200. Its totient is φ = 28407456.

The previous prime is 66285419. The next prime is 66285449. The reversal of 66285436 is 63458266.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 22785 + ... + 25528.

Almost surely, 2^66285436 is an apocalyptic number.

It is an amenable number.

66285436 is an abundant number, since it is smaller than the sum of its proper divisors (68993764).

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

66285436 is a wasteful number, since it uses less digits than its factorization.

66285436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48338 (or 48322 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 66285436 is about 8141.5868232182. The cubic root of 66285436 is about 404.7057477528.

The spelling of 66285436 in words is "sixty-six million, two hundred eighty-five thousand, four hundred thirty-six".