66090763 has 2 divisors, whose sum is σ = 66090764. Its totient is φ = 66090762.

The previous prime is 66090749. The next prime is 66090821. The reversal of 66090763 is 36709066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66090763 - 2²⁵ = 32536331 is a prime.

It is not a weakly prime, because it can be changed into another prime (66090463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33045381 + 33045382.

It is an arithmetic number, because the mean of its divisors is an integer number (33045382).

Almost surely, 2^66090763 is an apocalyptic number.

66090763 is a deficient number, since it is larger than the sum of its proper divisors (1).

66090763 is an equidigital number, since it uses as much as digits as its factorization.

66090763 is an odious number, because the sum of its binary digits is odd.

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

The square root of 66090763 is about 8129.6225619644. The cubic root of 66090763 is about 404.3091672429.

The spelling of 66090763 in words is "sixty-six million, ninety thousand, seven hundred sixty-three".