97655897 has 2 divisors, whose sum is σ = 97655898. Its totient is φ = 97655896.

The previous prime is 97655893. The next prime is 97655903. The reversal of 97655897 is 79855679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 37810201 = 7736^2 + 6149^2 .

It is a cyclic number.

It is not a de Polignac number, because 97655897 - 2² = 97655893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97655893) 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, 48827948 + 48827949.

It is an arithmetic number, because the mean of its divisors is an integer number (48827949).

Almost surely, 2^97655897 is an apocalyptic number.

It is an amenable number.

97655897 is a deficient number, since it is larger than the sum of its proper divisors (1).

97655897 is an equidigital number, since it uses as much as digits as its factorization.

97655897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The square root of 97655897 is about 9882.0998274658. The cubic root of 97655897 is about 460.5033824651.

The spelling of 97655897 in words is "ninety-seven million, six hundred fifty-five thousand, eight hundred ninety-seven".