616828229 has 2 divisors, whose sum is σ = 616828230. Its totient is φ = 616828228.

The previous prime is 616828189. The next prime is 616828243. The reversal of 616828229 is 922828616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311522500 + 305305729 = 17650^2 + 17473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616828229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616828229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616828259) 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, 308414114 + 308414115.

It is an arithmetic number, because the mean of its divisors is an integer number (308414115).

Almost surely, 2^616828229 is an apocalyptic number.

It is an amenable number.

616828229 is a deficient number, since it is larger than the sum of its proper divisors (1).

616828229 is an equidigital number, since it uses as much as digits as its factorization.

616828229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 616828229 is about 24836.0268360300. The cubic root of 616828229 is about 851.2453390320.

The spelling of 616828229 in words is "six hundred sixteen million, eight hundred twenty-eight thousand, two hundred twenty-nine".