66330837 has 12 divisors (see below), whose sum is σ = 96038124. Its totient is φ = 44115840.

The previous prime is 66330791. The next prime is 66330839. The reversal of 66330837 is 73803366.

66330837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38862756 + 27468081 = 6234^2 + 5241^2 .

It is not a de Polignac number, because 66330837 - 2⁸ = 66330581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66330839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4614 + ... + 12407.

It is an arithmetic number, because the mean of its divisors is an integer number (8003177).

Almost surely, 2^66330837 is an apocalyptic number.

It is an amenable number.

66330837 is a deficient number, since it is larger than the sum of its proper divisors (29707287).

66330837 is a wasteful number, since it uses less digits than its factorization.

66330837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17460 (or 17457 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 66330837 is about 8144.3745616223. The cubic root of 66330837 is about 404.7981252712.

The spelling of 66330837 in words is "sixty-six million, three hundred thirty thousand, eight hundred thirty-seven".