66432130 has 8 divisors (see below), whose sum is σ = 119577852. Its totient is φ = 26572848.

The previous prime is 66432089. The next prime is 66432139. The reversal of 66432130 is 3123466.

It can be written as a sum of positive squares in 2 ways, for example, as 60326289 + 6105841 = 7767^2 + 2471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66432095 and 66432104.

It is not an unprimeable number, because it can be changed into a prime (66432139) 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, 3321597 + ... + 3321616.

Almost surely, 2^66432130 is an apocalyptic number.

66432130 is a deficient number, since it is larger than the sum of its proper divisors (53145722).

66432130 is a wasteful number, since it uses less digits than its factorization.

66432130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6643220.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66432130 is about 8150.5907761340. The cubic root of 66432130 is about 405.0040745411.

Adding to 66432130 its reverse (3123466), we get a palindrome (69555596).

The spelling of 66432130 in words is "sixty-six million, four hundred thirty-two thousand, one hundred thirty".