66132793 has 2 divisors, whose sum is σ = 66132794. Its totient is φ = 66132792.

The previous prime is 66132791. The next prime is 66132799. The reversal of 66132793 is 39723166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65739664 + 393129 = 8108^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 66132793 - 2¹ = 66132791 is a prime.

Together with 66132791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66132791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33066396 + 33066397.

It is an arithmetic number, because the mean of its divisors is an integer number (33066397).

Almost surely, 2^66132793 is an apocalyptic number.

It is an amenable number.

66132793 is a deficient number, since it is larger than the sum of its proper divisors (1).

66132793 is an equidigital number, since it uses as much as digits as its factorization.

66132793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 66132793 is about 8132.2071419757. The cubic root of 66132793 is about 404.3948550283.

The spelling of 66132793 in words is "sixty-six million, one hundred thirty-two thousand, seven hundred ninety-three".