66104263 has 2 divisors, whose sum is σ = 66104264. Its totient is φ = 66104262.

The previous prime is 66104257. The next prime is 66104273. The reversal of 66104263 is 36240166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66104263 - 2¹³ = 66096071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66104273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33052131 + 33052132.

It is an arithmetic number, because the mean of its divisors is an integer number (33052132).

Almost surely, 2^66104263 is an apocalyptic number.

66104263 is a deficient number, since it is larger than the sum of its proper divisors (1).

66104263 is an equidigital number, since it uses as much as digits as its factorization.

66104263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 66104263 is about 8130.4528164180. The cubic root of 66104263 is about 404.3366940456.

It can be divided in two parts, 66 and 104263, that added together give a square (104329 = 323²).

The spelling of 66104263 in words is "sixty-six million, one hundred four thousand, two hundred sixty-three".