66026953 has 2 divisors, whose sum is σ = 66026954. Its totient is φ = 66026952.

The previous prime is 66026941. The next prime is 66026977. The reversal of 66026953 is 35962066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60419529 + 5607424 = 7773^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 66026953 - 2²⁵ = 32472521 is a prime.

It is not a weakly prime, because it can be changed into another prime (66026153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33013476 + 33013477.

It is an arithmetic number, because the mean of its divisors is an integer number (33013477).

Almost surely, 2^66026953 is an apocalyptic number.

It is an amenable number.

66026953 is a deficient number, since it is larger than the sum of its proper divisors (1).

66026953 is an equidigital number, since it uses as much as digits as its factorization.

66026953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 66026953 is about 8125.6970777897. The cubic root of 66026953 is about 404.1790064654.

The spelling of 66026953 in words is "sixty-six million, twenty-six thousand, nine hundred fifty-three".