266913793 has 2 divisors, whose sum is σ = 266913794. Its totient is φ = 266913792.

The previous prime is 266913763. The next prime is 266913839. The reversal of 266913793 is 397319662.

It is an a-pointer prime, because the next prime (266913839) can be obtained adding 266913793 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239382784 + 27531009 = 15472^2 + 5247^2 .

It is a cyclic number.

It is not a de Polignac number, because 266913793 - 2⁹ = 266913281 is a prime.

It is not a weakly prime, because it can be changed into another prime (266913733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133456896 + 133456897.

It is an arithmetic number, because the mean of its divisors is an integer number (133456897).

Almost surely, 2^266913793 is an apocalyptic number.

It is an amenable number.

266913793 is a deficient number, since it is larger than the sum of its proper divisors (1).

266913793 is an equidigital number, since it uses as much as digits as its factorization.

266913793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 46.

The square root of 266913793 is about 16337.4965340471. The cubic root of 266913793 is about 643.8583598910.

The spelling of 266913793 in words is "two hundred sixty-six million, nine hundred thirteen thousand, seven hundred ninety-three".