266013797 has 6 divisors (see below), whose sum is σ = 309444678. Its totient is φ = 228011784.

The previous prime is 266013779. The next prime is 266013827. The reversal of 266013797 is 797310662.

It can be written as a sum of positive squares in only one way, i.e., 265331521 + 682276 = 16289^2 + 826^2 .

It is not a de Polignac number, because 266013797 - 2⁸ = 266013541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266013707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2714378 + ... + 2714475.

It is an arithmetic number, because the mean of its divisors is an integer number (51574113).

Almost surely, 2^266013797 is an apocalyptic number.

It is an amenable number.

266013797 is a deficient number, since it is larger than the sum of its proper divisors (43430881).

266013797 is an equidigital number, since it uses as much as digits as its factorization.

266013797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428867 (or 5428860 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 266013797 is about 16309.9293989888. The cubic root of 266013797 is about 643.1338781997.

The spelling of 266013797 in words is "two hundred sixty-six million, thirteen thousand, seven hundred ninety-seven".