66100252 has 24 divisors (see below), whose sum is σ = 120992256. Its totient is φ = 31537968.

The previous prime is 66100207. The next prime is 66100261. The reversal of 66100252 is 25200166.

66100252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67873 + ... + 68839.

It is an arithmetic number, because the mean of its divisors is an integer number (5041344).

Almost surely, 2^66100252 is an apocalyptic number.

It is an amenable number.

66100252 is a deficient number, since it is larger than the sum of its proper divisors (54892004).

66100252 is a wasteful number, since it uses less digits than its factorization.

66100252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66100252 is about 8130.2061474479. The cubic root of 66100252 is about 404.3285159180.

The spelling of 66100252 in words is "sixty-six million, one hundred thousand, two hundred fifty-two".