66424245 has 8 divisors (see below), whose sum is σ = 106278816. Its totient is φ = 35426256.

The previous prime is 66424229. The next prime is 66424279. The reversal of 66424245 is 54242466.

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

It is not a de Polignac number, because 66424245 - 2⁴ = 66424229 is a prime.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 2214127 + ... + 2214156.

It is an arithmetic number, because the mean of its divisors is an integer number (13284852).

Almost surely, 2^66424245 is an apocalyptic number.

It is an amenable number.

66424245 is a deficient number, since it is larger than the sum of its proper divisors (39854571).

66424245 is a wasteful number, since it uses less digits than its factorization.

66424245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428291.

The product of its digits is 46080, while the sum is 33.

The square root of 66424245 is about 8150.1070545116. The cubic root of 66424245 is about 404.9880502495.

The spelling of 66424245 in words is "sixty-six million, four hundred twenty-four thousand, two hundred forty-five".