727123161 has 8 divisors (see below), whose sum is σ = 973270944. Its totient is φ = 482862080.

The previous prime is 727123109. The next prime is 727123169. The reversal of 727123161 is 161321727.

727123161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 727123161 - 2⁶ = 727123097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (727123169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470775 + ... + 472316.

It is an arithmetic number, because the mean of its divisors is an integer number (121658868).

Almost surely, 2^727123161 is an apocalyptic number.

It is an amenable number.

727123161 is a deficient number, since it is larger than the sum of its proper divisors (246147783).

727123161 is a wasteful number, since it uses less digits than its factorization.

727123161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943351.

The product of its digits is 3528, while the sum is 30.

The square root of 727123161 is about 26965.2213230302. The cubic root of 727123161 is about 899.2269744968.

Adding to 727123161 its reverse (161321727), we get a palindrome (888444888).

The spelling of 727123161 in words is "seven hundred twenty-seven million, one hundred twenty-three thousand, one hundred sixty-one".