66245216 has 24 divisors (see below), whose sum is σ = 130677624. Its totient is φ = 33057280.

The previous prime is 66245197. The next prime is 66245227. The reversal of 66245216 is 61254266.

66245216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 3 ways as a sum of consecutive naturals, for example, 17231 + ... + 20721.

It is an arithmetic number, because the mean of its divisors is an integer number (5444901).

Almost surely, 2^66245216 is an apocalyptic number.

It is an amenable number.

66245216 is a deficient number, since it is larger than the sum of its proper divisors (64432408).

66245216 is a wasteful number, since it uses less digits than its factorization.

66245216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094 (or 4086 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 66245216 is about 8139.1164139604. The cubic root of 66245216 is about 404.6238767846.

The spelling of 66245216 in words is "sixty-six million, two hundred forty-five thousand, two hundred sixteen".