616555097 has 2 divisors, whose sum is σ = 616555098. Its totient is φ = 616555096.

The previous prime is 616555057. The next prime is 616555123. The reversal of 616555097 is 790555616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614841616 + 1713481 = 24796^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 616555097 - 2⁶ = 616555033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (616555057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308277548 + 308277549.

It is an arithmetic number, because the mean of its divisors is an integer number (308277549).

Almost surely, 2^616555097 is an apocalyptic number.

It is an amenable number.

616555097 is a deficient number, since it is larger than the sum of its proper divisors (1).

616555097 is an equidigital number, since it uses as much as digits as its factorization.

616555097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 616555097 is about 24830.5275215812. The cubic root of 616555097 is about 851.1196764586.

The spelling of 616555097 in words is "six hundred sixteen million, five hundred fifty-five thousand, ninety-seven".