66212450 has 48 divisors (see below), whose sum is σ = 132641064. Its totient is φ = 24499200.

The previous prime is 66212429. The next prime is 66212453. The reversal of 66212450 is 5421266.

66212450 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 12 ways, for example, as 2036329 + 64176121 = 1427^2 + 8011^2 .

It is not an unprimeable number, because it can be changed into a prime (66212453) 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 23 ways as a sum of consecutive naturals, for example, 51212 + ... + 52488.

Almost surely, 2^66212450 is an apocalyptic number.

66212450 is an abundant number, since it is smaller than the sum of its proper divisors (66428614).

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

66212450 is a wasteful number, since it uses less digits than its factorization.

66212450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66212450 is about 8137.1032929415. The cubic root of 66212450 is about 404.5571545204.

The spelling of 66212450 in words is "sixty-six million, two hundred twelve thousand, four hundred fifty".