66227645 has 8 divisors (see below), whose sum is σ = 86698080. Its totient is φ = 48165520.

The previous prime is 66227641. The next prime is 66227647. The reversal of 66227645 is 54672266.

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

It is not a de Polignac number, because 66227645 - 2² = 66227641 is a prime.

It is a super-2 number, since 2×66227645² = 8772201924492050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66227599 and 66227608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66227641) 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, 602015 + ... + 602124.

It is an arithmetic number, because the mean of its divisors is an integer number (10837260).

Almost surely, 2^66227645 is an apocalyptic number.

It is an amenable number.

66227645 is a deficient number, since it is larger than the sum of its proper divisors (20470435).

66227645 is a wasteful number, since it uses less digits than its factorization.

66227645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204155.

The product of its digits is 120960, while the sum is 38.

The square root of 66227645 is about 8138.0369254508. The cubic root of 66227645 is about 404.5880992334.

The spelling of 66227645 in words is "sixty-six million, two hundred twenty-seven thousand, six hundred forty-five".