66244100 has 36 divisors (see below), whose sum is σ = 154810404. Its totient is φ = 24458880.

The previous prime is 66244099. The next prime is 66244111. The reversal of 66244100 is 144266.

It is a happy number.

66244100 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 6 ways, for example, as 1473796 + 64770304 = 1214^2 + 8048^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24179 + ... + 26778.

It is an arithmetic number, because the mean of its divisors is an integer number (4300289).

Almost surely, 2^66244100 is an apocalyptic number.

It is an amenable number.

66244100 is an abundant number, since it is smaller than the sum of its proper divisors (88566304).

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

66244100 is a wasteful number, since it uses less digits than its factorization.

66244100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50984 (or 50977 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 66244100 is about 8139.0478558613. The cubic root of 66244100 is about 404.6216046065.

Adding to 66244100 its reverse (144266), we get a palindrome (66388366).

The spelling of 66244100 in words is "sixty-six million, two hundred forty-four thousand, one hundred".