66468263 has 4 divisors (see below), whose sum is σ = 66685080. Its totient is φ = 66251448.

The previous prime is 66468211. The next prime is 66468277. The reversal of 66468263 is 36286466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66468263 - 2¹⁶ = 66402727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66468263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66468463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107948 + ... + 108561.

It is an arithmetic number, because the mean of its divisors is an integer number (16671270).

Almost surely, 2^66468263 is an apocalyptic number.

66468263 is a deficient number, since it is larger than the sum of its proper divisors (216817).

66468263 is a wasteful number, since it uses less digits than its factorization.

66468263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216816.

The product of its digits is 248832, while the sum is 41.

The square root of 66468263 is about 8152.8070626012. The cubic root of 66468263 is about 405.0774896182.

The spelling of 66468263 in words is "sixty-six million, four hundred sixty-eight thousand, two hundred sixty-three".