66030293 has 6 divisors (see below), whose sum is σ = 76810806. Its totient is φ = 56597352.

The previous prime is 66030287. The next prime is 66030299. The reversal of 66030293 is 39203066.

It is an interprime number because it is at equal distance from previous prime (66030287) and next prime (66030299).

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 16144324 = 7063^2 + 4018^2 .

It is not a de Polignac number, because 66030293 - 2⁶ = 66030229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66030299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673730 + ... + 673827.

It is an arithmetic number, because the mean of its divisors is an integer number (12801801).

Almost surely, 2^66030293 is an apocalyptic number.

It is an amenable number.

66030293 is a deficient number, since it is larger than the sum of its proper divisors (10780513).

66030293 is a wasteful number, since it uses less digits than its factorization.

66030293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347571 (or 1347564 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 66030293 is about 8125.9025960197. The cubic root of 66030293 is about 404.1858215364.

The spelling of 66030293 in words is "sixty-six million, thirty thousand, two hundred ninety-three".