263864729 has 2 divisors, whose sum is σ = 263864730. Its totient is φ = 263864728.

The previous prime is 263864677. The next prime is 263864747. The reversal of 263864729 is 927468362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142754704 + 121110025 = 11948^2 + 11005^2 .

It is a cyclic number.

It is not a de Polignac number, because 263864729 - 2¹² = 263860633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263864779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131932364 + 131932365.

It is an arithmetic number, because the mean of its divisors is an integer number (131932365).

Almost surely, 2^263864729 is an apocalyptic number.

It is an amenable number.

263864729 is a deficient number, since it is larger than the sum of its proper divisors (1).

263864729 is an equidigital number, since it uses as much as digits as its factorization.

263864729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 263864729 is about 16243.9135986375. The cubic root of 263864729 is about 641.3972800134.

The spelling of 263864729 in words is "two hundred sixty-three million, eight hundred sixty-four thousand, seven hundred twenty-nine".