66229141 has 4 divisors (see below), whose sum is σ = 72249984. Its totient is φ = 60208300.

The previous prime is 66229139. The next prime is 66229147. The reversal of 66229141 is 14192266.

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.

It is a cyclic number.

It is not a de Polignac number, because 66229141 - 2¹ = 66229139 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010405 + ... + 3010426.

It is an arithmetic number, because the mean of its divisors is an integer number (18062496).

Almost surely, 2^66229141 is an apocalyptic number.

It is an amenable number.

66229141 is a deficient number, since it is larger than the sum of its proper divisors (6020843).

66229141 is a wasteful number, since it uses less digits than its factorization.

66229141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020842.

The product of its digits is 5184, while the sum is 31.

The square root of 66229141 is about 8138.1288389900. The cubic root of 66229141 is about 404.5911455908.

The spelling of 66229141 in words is "sixty-six million, two hundred twenty-nine thousand, one hundred forty-one".