66273763 has 2 divisors, whose sum is σ = 66273764. Its totient is φ = 66273762.

The previous prime is 66273751. The next prime is 66273773. The reversal of 66273763 is 36737266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66273763 - 2¹³ = 66265571 is a prime.

It is not a weakly prime, because it can be changed into another prime (66273703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33136881 + 33136882.

It is an arithmetic number, because the mean of its divisors is an integer number (33136882).

Almost surely, 2^66273763 is an apocalyptic number.

66273763 is a deficient number, since it is larger than the sum of its proper divisors (1).

66273763 is an equidigital number, since it uses as much as digits as its factorization.

66273763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 40.

The square root of 66273763 is about 8140.8699166612. The cubic root of 66273763 is about 404.6819898566.

The spelling of 66273763 in words is "sixty-six million, two hundred seventy-three thousand, seven hundred sixty-three".