66263 has 8 divisors (see below), whose sum is σ = 71808. Its totient is φ = 60984.

The previous prime is 66239. The next prime is 66271. The reversal of 66263 is 36266.

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 66263 - 2¹⁰ = 65239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66293) 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, 956 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (8976).

2⁶⁶²⁶³ is an apocalyptic number.

66263 is a deficient number, since it is larger than the sum of its proper divisors (5545).

66263 is a wasteful number, since it uses less digits than its factorization.

66263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133.

The product of its digits is 1296, while the sum is 23.

The square root of 66263 is about 257.4160057184. The cubic root of 66263 is about 40.4660081599.

The spelling of 66263 in words is "sixty-six thousand, two hundred sixty-three".