66212752 has 40 divisors (see below), whose sum is σ = 131804064. Its totient is φ = 32212224.

The previous prime is 66212747. The next prime is 66212753. The reversal of 66212752 is 25721266.

66212752 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 (66212753) 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 7 ways as a sum of consecutive naturals, for example, 96603 + ... + 97285.

Almost surely, 2^66212752 is an apocalyptic number.

It is an amenable number.

66212752 is a deficient number, since it is larger than the sum of its proper divisors (65591312).

66212752 is a wasteful number, since it uses less digits than its factorization.

66212752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 66212752 is about 8137.1218498926. The cubic root of 66212752 is about 404.5577695914.

The spelling of 66212752 in words is "sixty-six million, two hundred twelve thousand, seven hundred fifty-two".