726287 has 2 divisors, whose sum is σ = 726288. Its totient is φ = 726286.

The previous prime is 726221. The next prime is 726289. The reversal of 726287 is 782627.

726287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726287 - 2¹⁸ = 464143 is a prime.

It is a super-3 number, since 3×726287³ = 1149333503577965709, which contains 333 as substring.

Together with 726289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726287.

It is not a weakly prime, because it can be changed into another prime (726289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363143 + 363144.

It is an arithmetic number, because the mean of its divisors is an integer number (363144).

2⁷²⁶²⁸⁷ is an apocalyptic number.

726287 is a deficient number, since it is larger than the sum of its proper divisors (1).

726287 is an equidigital number, since it uses as much as digits as its factorization.

726287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

The square root of 726287 is about 852.2247356185. The cubic root of 726287 is about 89.8882151241. Note that the first 3 decimals are identical.

The spelling of 726287 in words is "seven hundred twenty-six thousand, two hundred eighty-seven".