66422253 has 8 divisors (see below), whose sum is σ = 88648128. Its totient is φ = 44238944.

The previous prime is 66422249. The next prime is 66422269. The reversal of 66422253 is 35222466.

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 66422253 - 2² = 66422249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66422253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66422453) 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, 6801 + ... + 13382.

It is an arithmetic number, because the mean of its divisors is an integer number (11081016).

Almost surely, 2^66422253 is an apocalyptic number.

It is an amenable number.

66422253 is a deficient number, since it is larger than the sum of its proper divisors (22225875).

66422253 is a wasteful number, since it uses less digits than its factorization.

66422253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283.

The product of its digits is 17280, while the sum is 30.

The square root of 66422253 is about 8149.9848466117. The cubic root of 66422253 is about 404.9840018067.

The spelling of 66422253 in words is "sixty-six million, four hundred twenty-two thousand, two hundred fifty-three".