616288481 has 2 divisors, whose sum is σ = 616288482. Its totient is φ = 616288480.

The previous prime is 616288459. The next prime is 616288499. The reversal of 616288481 is 184882616.

616288481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440328256 + 175960225 = 20984^2 + 13265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616288481 is a prime.

It is a super-2 number, since 2×616288481² = 759622983626574722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (616288441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308144240 + 308144241.

It is an arithmetic number, because the mean of its divisors is an integer number (308144241).

Almost surely, 2^616288481 is an apocalyptic number.

It is an amenable number.

616288481 is a deficient number, since it is larger than the sum of its proper divisors (1).

616288481 is an equidigital number, since it uses as much as digits as its factorization.

616288481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 44.

The square root of 616288481 is about 24825.1582270889. The cubic root of 616288481 is about 850.9969759669.

The spelling of 616288481 in words is "six hundred sixteen million, two hundred eighty-eight thousand, four hundred eighty-one".