266872249 has 12 divisors (see below), whose sum is σ = 306755904. Its totient is φ = 227435472.

The previous prime is 266872237. The next prime is 266872357. The reversal of 266872249 is 942278662.

It is not a de Polignac number, because 266872249 - 2⁵ = 266872217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266872199 and 266872208.

It is not an unprimeable number, because it can be changed into a prime (266872219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366724 + ... + 367450.

It is an arithmetic number, because the mean of its divisors is an integer number (25562992).

Almost surely, 2^266872249 is an apocalyptic number.

It is an amenable number.

266872249 is a deficient number, since it is larger than the sum of its proper divisors (39883655).

266872249 is an frugal number, since it uses more digits than its factorization.

266872249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 963 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 266872249 is about 16336.2250535428. The cubic root of 266872249 is about 643.8249535499.

The spelling of 266872249 in words is "two hundred sixty-six million, eight hundred seventy-two thousand, two hundred forty-nine".