266689117 has 8 divisors (see below), whose sum is σ = 278994816. Its totient is φ = 254442672.

The previous prime is 266689109. The next prime is 266689169. The reversal of 266689117 is 711986662.

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 266689117 - 2³ = 266689109 is a prime.

It is a super-2 number, since 2×266689117² = 142246170252479378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266689177) 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, 5473 + ... + 23734.

It is an arithmetic number, because the mean of its divisors is an integer number (34874352).

Almost surely, 2^266689117 is an apocalyptic number.

It is an amenable number.

266689117 is a deficient number, since it is larger than the sum of its proper divisors (12305699).

266689117 is a wasteful number, since it uses less digits than its factorization.

266689117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29627.

The product of its digits is 217728, while the sum is 46.

The square root of 266689117 is about 16330.6190023526. The cubic root of 266689117 is about 643.6776521956.

The spelling of 266689117 in words is "two hundred sixty-six million, six hundred eighty-nine thousand, one hundred seventeen".