727969 has 4 divisors (see below), whose sum is σ = 794160. Its totient is φ = 661780.

The previous prime is 727949. The next prime is 727981. The reversal of 727969 is 969727.

727969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-727969 is a prime.

It is a super-2 number, since 2×727969² = 1059877729922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727939) 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, 33079 + ... + 33100.

It is an arithmetic number, because the mean of its divisors is an integer number (198540).

2⁷²⁷⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

727969 is a deficient number, since it is larger than the sum of its proper divisors (66191).

727969 is a wasteful number, since it uses less digits than its factorization.

727969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66190.

The product of its digits is 47628, while the sum is 40.

The square root of 727969 is about 853.2109938345. The cubic root of 727969 is about 89.9575519992.

The spelling of 727969 in words is "seven hundred twenty-seven thousand, nine hundred sixty-nine".