66229117 has 4 divisors (see below), whose sum is σ = 69714880. Its totient is φ = 62743356.

The previous prime is 66229099. The next prime is 66229123. The reversal of 66229117 is 71192266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71192266 = 2 ⋅35596133.

It is a cyclic number.

It is not a de Polignac number, because 66229117 - 2¹⁹ = 65704829 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 (66229147) 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 3 ways as a sum of consecutive naturals, for example, 1742853 + ... + 1742890.

It is an arithmetic number, because the mean of its divisors is an integer number (17428720).

Almost surely, 2^66229117 is an apocalyptic number.

It is an amenable number.

66229117 is a deficient number, since it is larger than the sum of its proper divisors (3485763).

66229117 is a wasteful number, since it uses less digits than its factorization.

66229117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485762.

The product of its digits is 9072, while the sum is 34.

The square root of 66229117 is about 8138.1273644494. The cubic root of 66229117 is about 404.5910967191.

The spelling of 66229117 in words is "sixty-six million, two hundred twenty-nine thousand, one hundred seventeen".