616245229 has 2 divisors, whose sum is σ = 616245230. Its totient is φ = 616245228.

The previous prime is 616245199. The next prime is 616245239. The reversal of 616245229 is 922542616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510669604 + 105575625 = 22598^2 + 10275^2 .

It is a cyclic number.

It is not a de Polignac number, because 616245229 - 2¹¹ = 616243181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616245239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308122614 + 308122615.

It is an arithmetic number, because the mean of its divisors is an integer number (308122615).

Almost surely, 2^616245229 is an apocalyptic number.

It is an amenable number.

616245229 is a deficient number, since it is larger than the sum of its proper divisors (1).

616245229 is an equidigital number, since it uses as much as digits as its factorization.

616245229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 616245229 is about 24824.2870793906. The cubic root of 616245229 is about 850.9770674428.

The spelling of 616245229 in words is "six hundred sixteen million, two hundred forty-five thousand, two hundred twenty-nine".