66065263 has 8 divisors (see below), whose sum is σ = 72135936. Its totient is φ = 60005400.

The previous prime is 66065249. The next prime is 66065267. The reversal of 66065263 is 36256066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66065263 - 2⁵ = 66065231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66065267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15370 + ... + 19192.

It is an arithmetic number, because the mean of its divisors is an integer number (9016992).

Almost surely, 2^66065263 is an apocalyptic number.

66065263 is a deficient number, since it is larger than the sum of its proper divisors (6070673).

66065263 is a wasteful number, since it uses less digits than its factorization.

66065263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 66065263 is about 8128.0540721627. The cubic root of 66065263 is about 404.2571619422.

The spelling of 66065263 in words is "sixty-six million, sixty-five thousand, two hundred sixty-three".