726331 has 2 divisors, whose sum is σ = 726332. Its totient is φ = 726330.

The previous prime is 726307. The next prime is 726337. The reversal of 726331 is 133627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726331 - 2¹³ = 718139 is a prime.

It is a super-2 number, since 2×726331² = 1055113443122, which contains 22 as substring.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (726337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363165 + 363166.

It is an arithmetic number, because the mean of its divisors is an integer number (363166).

2⁷²⁶³³¹ is an apocalyptic number.

726331 is a deficient number, since it is larger than the sum of its proper divisors (1).

726331 is an equidigital number, since it uses as much as digits as its factorization.

726331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 22.

The square root of 726331 is about 852.2505500145. The cubic root of 726331 is about 89.8900302934.

Adding to 726331 its reverse (133627), we get a palindrome (859958).

Subtracting from 726331 its reverse (133627), we obtain a cube (592704 = 84³).

The spelling of 726331 in words is "seven hundred twenty-six thousand, three hundred thirty-one".