66304430 has 16 divisors (see below), whose sum is σ = 119877840. Its totient is φ = 26404032.

The previous prime is 66304393. The next prime is 66304439. The reversal of 66304430 is 3440366.

It is a self number, because there is not a number n which added to its sum of digits gives 66304430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66304439) 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, 12335 + ... + 16874.

It is an arithmetic number, because the mean of its divisors is an integer number (7492365).

Almost surely, 2^66304430 is an apocalyptic number.

66304430 is a deficient number, since it is larger than the sum of its proper divisors (53573410).

66304430 is a wasteful number, since it uses less digits than its factorization.

66304430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29443.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 66304430 is about 8142.7532198882. The cubic root of 66304430 is about 404.7444000185.

Adding to 66304430 its reverse (3440366), we get a palindrome (69744796).

The spelling of 66304430 in words is "sixty-six million, three hundred four thousand, four hundred thirty".