266375047 has 2 divisors, whose sum is σ = 266375048. Its totient is φ = 266375046.

The previous prime is 266375017. The next prime is 266375059. The reversal of 266375047 is 740573662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266375047 - 2⁷ = 266374919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266375017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133187523 + 133187524.

It is an arithmetic number, because the mean of its divisors is an integer number (133187524).

Almost surely, 2^266375047 is an apocalyptic number.

266375047 is a deficient number, since it is larger than the sum of its proper divisors (1).

266375047 is an equidigital number, since it uses as much as digits as its factorization.

266375047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 266375047 is about 16321.0001838123. Note that the first 3 decimals coincide. The cubic root of 266375047 is about 643.4248744130.

It can be divided in two parts, 26637 and 5047, that added together give a square (31684 = 178²).

The spelling of 266375047 in words is "two hundred sixty-six million, three hundred seventy-five thousand, forty-seven".