66313230 has 64 divisors (see below), whose sum is σ = 168514560. Its totient is φ = 16654464.

The previous prime is 66313217. The next prime is 66313241. The reversal of 66313230 is 3231366.

It is a self number, because there is not a number n which added to its sum of digits gives 66313230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180507 + ... + 180873.

It is an arithmetic number, because the mean of its divisors is an integer number (2633040).

Almost surely, 2^66313230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66313230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84257280).

66313230 is an abundant number, since it is smaller than the sum of its proper divisors (102201330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66313230 is a wasteful number, since it uses less digits than its factorization.

66313230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 66313230 is about 8143.2935597337. The cubic root of 66313230 is about 404.7623052734.

Adding to 66313230 its reverse (3231366), we get a palindrome (69544596).

The spelling of 66313230 in words is "sixty-six million, three hundred thirteen thousand, two hundred thirty".