616486841 has 2 divisors, whose sum is σ = 616486842. Its totient is φ = 616486840.

The previous prime is 616486817. The next prime is 616486847. The reversal of 616486841 is 148684616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414733225 + 201753616 = 20365^2 + 14204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616486841 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 616486792 and 616486801.

It is not a weakly prime, because it can be changed into another prime (616486847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308243420 + 308243421.

It is an arithmetic number, because the mean of its divisors is an integer number (308243421).

Almost surely, 2^616486841 is an apocalyptic number.

It is an amenable number.

616486841 is a deficient number, since it is larger than the sum of its proper divisors (1).

616486841 is an equidigital number, since it uses as much as digits as its factorization.

616486841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 616486841 is about 24829.1530463687. The cubic root of 616486841 is about 851.0882674416.

The spelling of 616486841 in words is "six hundred sixteen million, four hundred eighty-six thousand, eight hundred forty-one".