616306897 has 2 divisors, whose sum is σ = 616306898. Its totient is φ = 616306896.

The previous prime is 616306853. The next prime is 616306921. The reversal of 616306897 is 798603616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603979776 + 12327121 = 24576^2 + 3511^2 .

It is a cyclic number.

It is not a de Polignac number, because 616306897 - 2¹⁵ = 616274129 is a prime.

It is not a weakly prime, because it can be changed into another prime (616306297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308153448 + 308153449.

It is an arithmetic number, because the mean of its divisors is an integer number (308153449).

Almost surely, 2^616306897 is an apocalyptic number.

It is an amenable number.

616306897 is a deficient number, since it is larger than the sum of its proper divisors (1).

616306897 is an equidigital number, since it uses as much as digits as its factorization.

616306897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 616306897 is about 24825.5291383688. The cubic root of 616306897 is about 851.0054524108.

The spelling of 616306897 in words is "six hundred sixteen million, three hundred six thousand, eight hundred ninety-seven".