66225797 has 8 divisors (see below), whose sum is σ = 72887040. Its totient is φ = 59671360.

The previous prime is 66225793. The next prime is 66225833. The reversal of 66225797 is 79752266.

66225797 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 66225797 - 2² = 66225793 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 (66225791) 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, 25397 + ... + 27882.

It is an arithmetic number, because the mean of its divisors is an integer number (9110880).

Almost surely, 2^66225797 is an apocalyptic number.

It is an amenable number.

66225797 is a deficient number, since it is larger than the sum of its proper divisors (6661243).

66225797 is a wasteful number, since it uses less digits than its factorization.

66225797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53403.

The product of its digits is 317520, while the sum is 44.

The square root of 66225797 is about 8137.9233837632. The cubic root of 66225797 is about 404.5843360226.

The spelling of 66225797 in words is "sixty-six million, two hundred twenty-five thousand, seven hundred ninety-seven".