66026266 has 16 divisors (see below), whose sum is σ = 105454440. Its totient is φ = 30896640.

The previous prime is 66026231. The next prime is 66026267. The reversal of 66026266 is 66262066.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53217025 + 12809241 = 7295^2 + 3579^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (66026267) 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, 790 + ... + 11518.

Almost surely, 2^66026266 is an apocalyptic number.

66026266 is a deficient number, since it is larger than the sum of its proper divisors (39428174).

66026266 is a wasteful number, since it uses less digits than its factorization.

66026266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10929.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66026266 is about 8125.6548043835. The cubic root of 66026266 is about 404.1776046543.

The spelling of 66026266 in words is "sixty-six million, twenty-six thousand, two hundred sixty-six".