130660066 has 4 divisors (see below), whose sum is σ = 195990102. Its totient is φ = 65330032.

The previous prime is 130660063. The next prime is 130660081. The reversal of 130660066 is 660066031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660066031 = 2819 ⋅234149.

It can be written as a sum of positive squares in only one way, i.e., 130622041 + 38025 = 11429^2 + 195^2 .

It is not an unprimeable number, because it can be changed into a prime (130660063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32665015 + ... + 32665018.

Almost surely, 2^130660066 is an apocalyptic number.

130660066 is a deficient number, since it is larger than the sum of its proper divisors (65330036).

130660066 is an equidigital number, since it uses as much as digits as its factorization.

130660066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65330035.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 130660066 is about 11430.6634103188. The cubic root of 130660066 is about 507.4356293582.

The spelling of 130660066 in words is "one hundred thirty million, six hundred sixty thousand, sixty-six".