727091 has 4 divisors (see below), whose sum is σ = 729072. Its totient is φ = 725112.

The previous prime is 727079. The next prime is 727121. The reversal of 727091 is 190727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190727 = 89 ⋅2143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-727091 is a prime.

It is a super-2 number, since 2×727091² = 1057322644562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 727091.

It is not an unprimeable number, because it can be changed into a prime (727021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (182268).

2⁷²⁷⁰⁹¹ is an apocalyptic number.

727091 is a deficient number, since it is larger than the sum of its proper divisors (1981).

727091 is a wasteful number, since it uses less digits than its factorization.

727091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 727091 is about 852.6963117077. The cubic root of 727091 is about 89.9213716557.

The spelling of 727091 in words is "seven hundred twenty-seven thousand, ninety-one".