66260011 has 4 divisors (see below), whose sum is σ = 69747400. Its totient is φ = 62772624.

The previous prime is 66259993. The next prime is 66260023. The reversal of 66260011 is 11006266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11006266 = 2 ⋅5503133.

It is a cyclic number.

It is not a de Polignac number, because 66260011 - 2⁷ = 66259883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66261011) 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, 1743666 + ... + 1743703.

It is an arithmetic number, because the mean of its divisors is an integer number (17436850).

Almost surely, 2^66260011 is an apocalyptic number.

66260011 is a deficient number, since it is larger than the sum of its proper divisors (3487389).

66260011 is a wasteful number, since it uses less digits than its factorization.

66260011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487388.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 66260011 is about 8140.0252456611. The cubic root of 66260011 is about 404.6539970207.

Adding to 66260011 its reverse (11006266), we get a palindrome (77266277).

The spelling of 66260011 in words is "sixty-six million, two hundred sixty thousand, eleven".