726874331 has 2 divisors, whose sum is σ = 726874332. Its totient is φ = 726874330.

The previous prime is 726874307. The next prime is 726874387. The reversal of 726874331 is 133478627.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726874331 is a prime.

It is a super-2 number, since 2×726874331² = 1056692586133395122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (726874301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363437165 + 363437166.

It is an arithmetic number, because the mean of its divisors is an integer number (363437166).

Almost surely, 2^726874331 is an apocalyptic number.

726874331 is a deficient number, since it is larger than the sum of its proper divisors (1).

726874331 is an equidigital number, since it uses as much as digits as its factorization.

726874331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 726874331 is about 26960.6070220980. The cubic root of 726874331 is about 899.1243874851.

The spelling of 726874331 in words is "seven hundred twenty-six million, eight hundred seventy-four thousand, three hundred thirty-one".