132666817 has 4 divisors (see below), whose sum is σ = 132905556. Its totient is φ = 132428080.

The previous prime is 132666773. The next prime is 132666823. The reversal of 132666817 is 718666231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718666231 = 10631 ⋅67601.

It can be written as a sum of positive squares in 2 ways, for example, as 46566976 + 86099841 = 6824^2 + 9279^2 .

It is a cyclic number.

It is not a de Polignac number, because 132666817 - 2⁷ = 132666689 is a prime.

It is a super-2 number, since 2×132666817² = 35200968665822978, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 132666817.

It is not an unprimeable number, because it can be changed into a prime (132666847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118534 + ... + 119647.

It is an arithmetic number, because the mean of its divisors is an integer number (33226389).

Almost surely, 2^132666817 is an apocalyptic number.

It is an amenable number.

132666817 is a deficient number, since it is larger than the sum of its proper divisors (238739).

132666817 is an equidigital number, since it uses as much as digits as its factorization.

132666817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238738.

The product of its digits is 72576, while the sum is 40.

The square root of 132666817 is about 11518.1082214051. The cubic root of 132666817 is about 510.0202696032.

The spelling of 132666817 in words is "one hundred thirty-two million, six hundred sixty-six thousand, eight hundred seventeen".