616614161 has 4 divisors (see below), whose sum is σ = 623542500. Its totient is φ = 609685824.

The previous prime is 616614151. The next prime is 616614181. The reversal of 616614161 is 161416616.

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 230098561 + 386515600 = 15169^2 + 19660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616614161 is a prime.

It is a super-3 number, since 3×616614161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616614101) 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, 3464036 + ... + 3464213.

It is an arithmetic number, because the mean of its divisors is an integer number (155885625).

Almost surely, 2^616614161 is an apocalyptic number.

It is an amenable number.

616614161 is a deficient number, since it is larger than the sum of its proper divisors (6928339).

616614161 is an equidigital number, since it uses as much as digits as its factorization.

616614161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928338.

The product of its digits is 5184, while the sum is 32.

The square root of 616614161 is about 24831.7168355311. The cubic root of 616614161 is about 851.1468537688.

The spelling of 616614161 in words is "six hundred sixteen million, six hundred fourteen thousand, one hundred sixty-one".