66224357 has 8 divisors (see below), whose sum is σ = 67248000. Its totient is φ = 65205504.

The previous prime is 66224317. The next prime is 66224369. The reversal of 66224357 is 75342266.

66224357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66224357 - 2¹² = 66220261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66224317) 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 in 7 ways as a sum of consecutive naturals, for example, 34538 + ... + 36404.

It is an arithmetic number, because the mean of its divisors is an integer number (8406000).

Almost surely, 2^66224357 is an apocalyptic number.

It is an amenable number.

66224357 is a deficient number, since it is larger than the sum of its proper divisors (1023643).

66224357 is a wasteful number, since it uses less digits than its factorization.

66224357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395.

The product of its digits is 60480, while the sum is 35.

The square root of 66224357 is about 8137.8349086228. The cubic root of 66224357 is about 404.5814036020.

The spelling of 66224357 in words is "sixty-six million, two hundred twenty-four thousand, three hundred fifty-seven".