66245853 has 8 divisors (see below), whose sum is σ = 91177216. Its totient is φ = 42739200.

The previous prime is 66245801. The next prime is 66245857. The reversal of 66245853 is 35854266.

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

It is not a de Polignac number, because 66245853 - 2¹² = 66241757 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 (66245857) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 356068 + ... + 356253.

It is an arithmetic number, because the mean of its divisors is an integer number (11397152).

Almost surely, 2^66245853 is an apocalyptic number.

It is an amenable number.

66245853 is a deficient number, since it is larger than the sum of its proper divisors (24931363).

66245853 is a wasteful number, since it uses less digits than its factorization.

66245853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712355.

The product of its digits is 172800, while the sum is 39.

The square root of 66245853 is about 8139.1555458782. The cubic root of 66245853 is about 404.6251737063.

The spelling of 66245853 in words is "sixty-six million, two hundred forty-five thousand, eight hundred fifty-three".