616229969 has 2 divisors, whose sum is σ = 616229970. Its totient is φ = 616229968.

The previous prime is 616229963. The next prime is 616230029. The reversal of 616229969 is 969922616.

616229969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449948944 + 166281025 = 21212^2 + 12895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616229969 is a prime.

It is a super-2 number, since 2×616229969² = 759478749387481922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (616229963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308114984 + 308114985.

It is an arithmetic number, because the mean of its divisors is an integer number (308114985).

Almost surely, 2^616229969 is an apocalyptic number.

It is an amenable number.

616229969 is a deficient number, since it is larger than the sum of its proper divisors (1).

616229969 is an equidigital number, since it uses as much as digits as its factorization.

616229969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 50.

The square root of 616229969 is about 24823.9797172009. The cubic root of 616229969 is about 850.9700431735.

The spelling of 616229969 in words is "six hundred sixteen million, two hundred twenty-nine thousand, nine hundred sixty-nine".