616423161 has 16 divisors (see below), whose sum is σ = 863815680. Its totient is φ = 390247440.

The previous prime is 616423153. The next prime is 616423177. The reversal of 616423161 is 161324616.

It is not a de Polignac number, because 616423161 - 2³ = 616423153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616423261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22545 + ... + 41726.

It is an arithmetic number, because the mean of its divisors is an integer number (53988480).

Almost surely, 2^616423161 is an apocalyptic number.

It is an amenable number.

616423161 is a deficient number, since it is larger than the sum of its proper divisors (247392519).

616423161 is a wasteful number, since it uses less digits than its factorization.

616423161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64436.

The product of its digits is 5184, while the sum is 30.

The square root of 616423161 is about 24827.8706497356. The cubic root of 616423161 is about 851.0589620489.

Adding to 616423161 its reverse (161324616), we get a palindrome (777747777).

The spelling of 616423161 in words is "six hundred sixteen million, four hundred twenty-three thousand, one hundred sixty-one".