66242311 has 8 divisors (see below), whose sum is σ = 67020800. Its totient is φ = 65468088.

The previous prime is 66242291. The next prime is 66242327. The reversal of 66242311 is 11324266.

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 66242311 - 2¹⁷ = 66111239 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 (66248311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38140 + ... + 39838.

It is an arithmetic number, because the mean of its divisors is an integer number (8377600).

Almost surely, 2^66242311 is an apocalyptic number.

66242311 is a deficient number, since it is larger than the sum of its proper divisors (778489).

66242311 is a wasteful number, since it uses less digits than its factorization.

66242311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133.

The product of its digits is 1728, while the sum is 25.

The square root of 66242311 is about 8138.9379528290. The cubic root of 66242311 is about 404.6179621459.

Adding to 66242311 its reverse (11324266), we get a palindrome (77566577).

It can be divided in two parts, 662423 and 11, that multiplied together give a triangular number (7286653 = T₃₈₁₇).

The spelling of 66242311 in words is "sixty-six million, two hundred forty-two thousand, three hundred eleven".