66431230 has 8 divisors (see below), whose sum is σ = 119576232. Its totient is φ = 26572488.

The previous prime is 66431219. The next prime is 66431263. The reversal of 66431230 is 3213466.

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 = 66431195 and 66431204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321552 + ... + 3321571.

It is an arithmetic number, because the mean of its divisors is an integer number (14947029).

Almost surely, 2^66431230 is an apocalyptic number.

66431230 is a deficient number, since it is larger than the sum of its proper divisors (53145002).

66431230 is a wasteful number, since it uses less digits than its factorization.

66431230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6643130.

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

The square root of 66431230 is about 8150.5355652251. The cubic root of 66431230 is about 405.0022455802.

Adding to 66431230 its reverse (3213466), we get a palindrome (69644696).

The spelling of 66431230 in words is "sixty-six million, four hundred thirty-one thousand, two hundred thirty".