66130611 has 4 divisors (see below), whose sum is σ = 88174152. Its totient is φ = 44087072.

The previous prime is 66130609. The next prime is 66130637. The reversal of 66130611 is 11603166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66130611 - 2¹ = 66130609 is a prime.

It is a super-2 number, since 2×66130611² = 8746515422466642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66130661) 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, 11021766 + ... + 11021771.

It is an arithmetic number, because the mean of its divisors is an integer number (22043538).

Almost surely, 2^66130611 is an apocalyptic number.

66130611 is a deficient number, since it is larger than the sum of its proper divisors (22043541).

66130611 is a wasteful number, since it uses less digits than its factorization.

66130611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22043540.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 66130611 is about 8132.0729829484. The cubic root of 66130611 is about 404.3904074150.

Adding to 66130611 its reverse (11603166), we get a palindrome (77733777).

The spelling of 66130611 in words is "sixty-six million, one hundred thirty thousand, six hundred eleven".