66453012 has 36 divisors (see below), whose sum is σ = 170491776. Its totient is φ = 21819600.

The previous prime is 66452993. The next prime is 66453019. The reversal of 66453012 is 21035466.

66453012 is a `hidden beast` number, since 6 + 645 + 3 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66453019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11364 + ... + 16187.

Almost surely, 2^66453012 is an apocalyptic number.

It is an amenable number.

66453012 is an abundant number, since it is smaller than the sum of its proper divisors (104038764).

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

66453012 is a wasteful number, since it uses less digits than its factorization.

66453012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628 (or 27623 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66453012 is about 8151.8716869195. The cubic root of 66453012 is about 405.0465058621.

Adding to 66453012 its reverse (21035466), we get a palindrome (87488478).

The spelling of 66453012 in words is "sixty-six million, four hundred fifty-three thousand, twelve".