727307261 has 12 divisors (see below), whose sum is σ = 755339508. Its totient is φ = 700227072.

The previous prime is 727307227. The next prime is 727307263. The reversal of 727307261 is 162703727.

It can be written as a sum of positive squares in 6 ways, for example, as 380640100 + 346667161 = 19510^2 + 18619^2 .

It is not a de Polignac number, because 727307261 - 2¹⁸ = 727045117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727307263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130055 + ... + 135531.

It is an arithmetic number, because the mean of its divisors is an integer number (62944959).

Almost surely, 2^727307261 is an apocalyptic number.

It is an amenable number.

727307261 is a deficient number, since it is larger than the sum of its proper divisors (28032247).

727307261 is an equidigital number, since it uses as much as digits as its factorization.

727307261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5648 (or 5611 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 727307261 is about 26968.6347633691. The cubic root of 727307261 is about 899.3028597228.

The spelling of 727307261 in words is "seven hundred twenty-seven million, three hundred seven thousand, two hundred sixty-one".