616849 has 2 divisors, whose sum is σ = 616850. Its totient is φ = 616848.

The previous prime is 616843. The next prime is 616871. The reversal of 616849 is 948616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 154449 = 680^2 + 393^2 .

It is a cyclic number.

It is not a de Polignac number, because 616849 - 2³ = 616841 is a prime.

616849 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (616841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308424 + 308425.

It is an arithmetic number, because the mean of its divisors is an integer number (308425).

2⁶¹⁶⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

616849 is a deficient number, since it is larger than the sum of its proper divisors (1).

616849 is an equidigital number, since it uses as much as digits as its factorization.

616849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 616849 is about 785.3973516635. The cubic root of 616849 is about 85.1254893836.

The spelling of 616849 in words is "six hundred sixteen thousand, eight hundred forty-nine".