66005101 has 16 divisors (see below), whose sum is σ = 73350144. Its totient is φ = 59076864.

The previous prime is 66005099. The next prime is 66005113. The reversal of 66005101 is 10150066.

It is a cyclic number.

It is not a de Polignac number, because 66005101 - 2¹ = 66005099 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 (66005171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86815 + ... + 87571.

It is an arithmetic number, because the mean of its divisors is an integer number (4584384).

Almost surely, 2^66005101 is an apocalyptic number.

It is an amenable number.

66005101 is a deficient number, since it is larger than the sum of its proper divisors (7345043).

66005101 is a wasteful number, since it uses less digits than its factorization.

66005101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 66005101 is about 8124.3523434179. The cubic root of 66005101 is about 404.1344130896.

Adding to 66005101 its reverse (10150066), we get a palindrome (76155167).

The spelling of 66005101 in words is "sixty-six million, five thousand, one hundred one".