727343261 has 2 divisors, whose sum is σ = 727343262. Its totient is φ = 727343260.

The previous prime is 727343257. The next prime is 727343263. The reversal of 727343261 is 162343727.

727343261 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 can be written as a sum of positive squares in only one way, i.e., 646684900 + 80658361 = 25430^2 + 8981^2 .

It is a cyclic number.

It is not a de Polignac number, because 727343261 - 2² = 727343257 is a prime.

It is a super-2 number, since 2×727343261² = 1058056438644228242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 727343263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (727343263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363671630 + 363671631.

It is an arithmetic number, because the mean of its divisors is an integer number (363671631).

Almost surely, 2^727343261 is an apocalyptic number.

It is an amenable number.

727343261 is a deficient number, since it is larger than the sum of its proper divisors (1).

727343261 is an equidigital number, since it uses as much as digits as its factorization.

727343261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 35.

The square root of 727343261 is about 26969.3021971278. The cubic root of 727343261 is about 899.3176972707.

Adding to 727343261 its reverse (162343727), we get a palindrome (889686988).

The spelling of 727343261 in words is "seven hundred twenty-seven million, three hundred forty-three thousand, two hundred sixty-one".