726731287 has 2 divisors, whose sum is σ = 726731288. Its totient is φ = 726731286.

The previous prime is 726731281. The next prime is 726731293. The reversal of 726731287 is 782137627.

It is a balanced prime because it is at equal distance from previous prime (726731281) and next prime (726731293).

It is a cyclic number.

It is not a de Polignac number, because 726731287 - 2¹⁵ = 726698519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726731281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363365643 + 363365644.

It is an arithmetic number, because the mean of its divisors is an integer number (363365644).

Almost surely, 2^726731287 is an apocalyptic number.

726731287 is a deficient number, since it is larger than the sum of its proper divisors (1).

726731287 is an equidigital number, since it uses as much as digits as its factorization.

726731287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 726731287 is about 26957.9540581254. The cubic root of 726731287 is about 899.0654030632.

The spelling of 726731287 in words is "seven hundred twenty-six million, seven hundred thirty-one thousand, two hundred eighty-seven".