66853252 has 6 divisors (see below), whose sum is σ = 116993198. Its totient is φ = 33426624.

The previous prime is 66853243. The next prime is 66853253. The reversal of 66853252 is 25235866.

It is a happy number.

66853252 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 only one way, i.e., 55115776 + 11737476 = 7424^2 + 3426^2 .

It is not an unprimeable number, because it can be changed into a prime (66853253) 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 as a sum of consecutive naturals, namely, 8356653 + ... + 8356660.

Almost surely, 2^66853252 is an apocalyptic number.

It is an amenable number.

66853252 is a deficient number, since it is larger than the sum of its proper divisors (50139946).

66853252 is a wasteful number, since it uses less digits than its factorization.

66853252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16713317 (or 16713315 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 66853252 is about 8176.3837972541. The cubic root of 66853252 is about 405.8580639043.

The spelling of 66853252 in words is "sixty-six million, eight hundred fifty-three thousand, two hundred fifty-two".