531330066 has 24 divisors (see below), whose sum is σ = 1151674524. Its totient is φ = 177039360.

The previous prime is 531330031. The next prime is 531330077. The reversal of 531330066 is 660033135.

It can be written as a sum of positive squares in 2 ways, for example, as 441630225 + 89699841 = 21015^2 + 9471^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61026 + ... + 69186.

Almost surely, 2^531330066 is an apocalyptic number.

531330066 is an abundant number, since it is smaller than the sum of its proper divisors (620344458).

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

531330066 is a wasteful number, since it uses less digits than its factorization.

531330066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11786 (or 11783 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 531330066 is about 23050.5979531985. The cubic root of 531330066 is about 809.9436357670.

The spelling of 531330066 in words is "five hundred thirty-one million, three hundred thirty thousand, sixty-six".