66841252 has 6 divisors (see below), whose sum is σ = 116972198. Its totient is φ = 33420624.

The previous prime is 66841241. The next prime is 66841261. The reversal of 66841252 is 25214866.

It can be written as a sum of positive squares in only one way, i.e., 55591936 + 11249316 = 7456^2 + 3354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8355153 + ... + 8355160.

Almost surely, 2^66841252 is an apocalyptic number.

It is an amenable number.

66841252 is a deficient number, since it is larger than the sum of its proper divisors (50130946).

66841252 is a wasteful number, since it uses less digits than its factorization.

66841252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16710317 (or 16710315 counting only the distinct ones).

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

The square root of 66841252 is about 8175.6499435825. The cubic root of 66841252 is about 405.8337789316.

The spelling of 66841252 in words is "sixty-six million, eight hundred forty-one thousand, two hundred fifty-two".