66488330 has 8 divisors (see below), whose sum is σ = 119679012. Its totient is φ = 26595328.

The previous prime is 66488299. The next prime is 66488333. The reversal of 66488330 is 3388466.

It can be written as a sum of positive squares in 2 ways, for example, as 59428681 + 7059649 = 7709^2 + 2657^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66488333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3324407 + ... + 3324426.

Almost surely, 2^66488330 is an apocalyptic number.

66488330 is a deficient number, since it is larger than the sum of its proper divisors (53190682).

66488330 is a wasteful number, since it uses less digits than its factorization.

66488330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6648840.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 66488330 is about 8154.0376501461. The cubic root of 66488330 is about 405.1182502847.

The spelling of 66488330 in words is "sixty-six million, four hundred eighty-eight thousand, three hundred thirty".