66212548 has 12 divisors (see below), whose sum is σ = 115960572. Its totient is φ = 33080960.

The previous prime is 66212543. The next prime is 66212567. The reversal of 66212548 is 84521266.

66212548 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 44515584 + 21696964 = 6672^2 + 4658^2 .

It is not an unprimeable number, because it can be changed into a prime (66212543) 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, 336 + ... + 11512.

It is an arithmetic number, because the mean of its divisors is an integer number (9663381).

Almost surely, 2^66212548 is an apocalyptic number.

It is an amenable number.

66212548 is a deficient number, since it is larger than the sum of its proper divisors (49748024).

66212548 is a wasteful number, since it uses less digits than its factorization.

66212548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12662 (or 12660 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 66212548 is about 8137.1093147383. The cubic root of 66212548 is about 404.5573541132.

The spelling of 66212548 in words is "sixty-six million, two hundred twelve thousand, five hundred forty-eight".