66430243 has 8 divisors (see below), whose sum is σ = 72538416. Its totient is φ = 60333600.

The previous prime is 66430229. The next prime is 66430249. The reversal of 66430243 is 34203466.

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

It is a cyclic number.

It is not a de Polignac number, because 66430243 - 2⁵ = 66430211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66430249) 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, 13005 + ... + 17377.

It is an arithmetic number, because the mean of its divisors is an integer number (9067302).

Almost surely, 2^66430243 is an apocalyptic number.

66430243 is a deficient number, since it is larger than the sum of its proper divisors (6108173).

66430243 is a wasteful number, since it uses less digits than its factorization.

66430243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 66430243 is about 8150.4750168318. The cubic root of 66430243 is about 405.0002398007. Note that the first 3 decimals are identical.

The spelling of 66430243 in words is "sixty-six million, four hundred thirty thousand, two hundred forty-three".