66430085 has 8 divisors (see below), whose sum is σ = 80839296. Its totient is φ = 52395280.

The previous prime is 66430081. The next prime is 66430087. The reversal of 66430085 is 58003466.

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

It is not a de Polignac number, because 66430085 - 2² = 66430081 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 (66430081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93209 + ... + 93918.

It is an arithmetic number, because the mean of its divisors is an integer number (10104912).

Almost surely, 2^66430085 is an apocalyptic number.

It is an amenable number.

66430085 is a deficient number, since it is larger than the sum of its proper divisors (14409211).

66430085 is a wasteful number, since it uses less digits than its factorization.

66430085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187203.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66430085 is about 8150.4653241395. The cubic root of 66430085 is about 404.9999187116. Note that the first 4 decimals are identical.

The spelling of 66430085 in words is "sixty-six million, four hundred thirty thousand, eighty-five".