66872192 has 16 divisors (see below), whose sum is σ = 133222200. Its totient is φ = 33436032.

The previous prime is 66872147. The next prime is 66872227. The reversal of 66872192 is 29127866.

66872192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (16).

It is a zygodrome in base 2.

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 as a sum of consecutive naturals, namely, 261092 + ... + 261347.

Almost surely, 2^66872192 is an apocalyptic number.

It is an amenable number.

66872192 is a deficient number, since it is larger than the sum of its proper divisors (66350008).

66872192 is an equidigital number, since it uses as much as digits as its factorization.

66872192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522453 (or 522441 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 66872192 is about 8177.5419289662. The cubic root of 66872192 is about 405.8963877739.

The spelling of 66872192 in words is "sixty-six million, eight hundred seventy-two thousand, one hundred ninety-two".