66041793 has 12 divisors (see below), whose sum is σ = 95465188. Its totient is φ = 43994880.

The previous prime is 66041761. The next prime is 66041803. The reversal of 66041793 is 39714066.

It can be written as a sum of positive squares in 2 ways, for example, as 50808384 + 15233409 = 7128^2 + 3903^2 .

It is not a de Polignac number, because 66041793 - 2⁵ = 66041761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66041743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18921 + ... + 22137.

Almost surely, 2^66041793 is an apocalyptic number.

It is an amenable number.

66041793 is a deficient number, since it is larger than the sum of its proper divisors (29423395).

66041793 is a wasteful number, since it uses less digits than its factorization.

66041793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504 (or 5501 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 66041793 is about 8126.6101789122. The cubic root of 66041793 is about 404.2092848435.

The spelling of 66041793 in words is "sixty-six million, forty-one thousand, seven hundred ninety-three".