263729 has 2 divisors, whose sum is σ = 263730. Its totient is φ = 263728.

The previous prime is 263723. The next prime is 263737. The reversal of 263729 is 927362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 40000 = 473^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 263729 - 2¹⁶ = 198193 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (263723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131864 + 131865.

It is an arithmetic number, because the mean of its divisors is an integer number (131865).

2²⁶³⁷²⁹ is an apocalyptic number.

It is an amenable number.

263729 is a deficient number, since it is larger than the sum of its proper divisors (1).

263729 is an equidigital number, since it uses as much as digits as its factorization.

263729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 263729 is about 513.5455189173. The cubic root of 263729 is about 64.1287285342.

The spelling of 263729 in words is "two hundred sixty-three thousand, seven hundred twenty-nine".