266679349 has 4 divisors (see below), whose sum is σ = 267035200. Its totient is φ = 266323500.

The previous prime is 266679317. The next prime is 266679353. The reversal of 266679349 is 943976662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 943976662 = 2 ⋅471988331.

It is a cyclic number.

It is not a de Polignac number, because 266679349 - 2⁵ = 266679317 is a prime.

It is a super-2 number, since 2×266679349² = 142235750366127602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266679296 and 266679305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266679359) 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, 176799 + ... + 178300.

It is an arithmetic number, because the mean of its divisors is an integer number (66758800).

Almost surely, 2^266679349 is an apocalyptic number.

It is an amenable number.

266679349 is a deficient number, since it is larger than the sum of its proper divisors (355851).

266679349 is an equidigital number, since it uses as much as digits as its factorization.

266679349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355850.

The product of its digits is 2939328, while the sum is 52.

The square root of 266679349 is about 16330.3199295054. The cubic root of 266679349 is about 643.6697934572.

The spelling of 266679349 in words is "two hundred sixty-six million, six hundred seventy-nine thousand, three hundred forty-nine".