616243 has 2 divisors, whose sum is σ = 616244. Its totient is φ = 616242.

The previous prime is 616229. The next prime is 616261. The reversal of 616243 is 342616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616243 - 2⁵ = 616211 is a prime.

It is not a weakly prime, because it can be changed into another prime (616223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308121 + 308122.

It is an arithmetic number, because the mean of its divisors is an integer number (308122).

2⁶¹⁶²⁴³ is an apocalyptic number.

616243 is a deficient number, since it is larger than the sum of its proper divisors (1).

616243 is an equidigital number, since it uses as much as digits as its factorization.

616243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 616243 is about 785.0114648844. The cubic root of 616243 is about 85.0976041428.

Adding to 616243 its reverse (342616), we get a palindrome (958859).

The spelling of 616243 in words is "six hundred sixteen thousand, two hundred forty-three".