266880473 has 4 divisors (see below), whose sum is σ = 269879220. Its totient is φ = 263881728.

The previous prime is 266880469. The next prime is 266880491. The reversal of 266880473 is 374088662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178275904 + 88604569 = 13352^2 + 9413^2 .

It is a cyclic number.

It is not a de Polignac number, because 266880473 - 2² = 266880469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266880413) 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, 1499240 + ... + 1499417.

It is an arithmetic number, because the mean of its divisors is an integer number (67469805).

Almost surely, 2^266880473 is an apocalyptic number.

It is an amenable number.

266880473 is a deficient number, since it is larger than the sum of its proper divisors (2998747).

266880473 is an equidigital number, since it uses as much as digits as its factorization.

266880473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998746.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 266880473 is about 16336.4767621418. The cubic root of 266880473 is about 643.8315669040.

The spelling of 266880473 in words is "two hundred sixty-six million, eight hundred eighty thousand, four hundred seventy-three".