727913 has 4 divisors (see below), whose sum is σ = 739908. Its totient is φ = 715920.

The previous prime is 727891. The next prime is 727933. The reversal of 727913 is 319727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283024 + 444889 = 532^2 + 667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-727913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (727933) 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 in 3 ways as a sum of consecutive naturals, for example, 5906 + ... + 6027.

It is an arithmetic number, because the mean of its divisors is an integer number (184977).

2⁷²⁷⁹¹³ is an apocalyptic number.

It is an amenable number.

727913 is a deficient number, since it is larger than the sum of its proper divisors (11995).

727913 is a wasteful number, since it uses less digits than its factorization.

727913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11994.

The product of its digits is 2646, while the sum is 29.

The square root of 727913 is about 853.1781759984. The cubic root of 727913 is about 89.9552452380.

The spelling of 727913 in words is "seven hundred twenty-seven thousand, nine hundred thirteen".