97676809 has 2 divisors, whose sum is σ = 97676810. Its totient is φ = 97676808.

The previous prime is 97676773. The next prime is 97676819. The reversal of 97676809 is 90867679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 24950025 = 8528^2 + 4995^2 .

It is a cyclic number.

It is not a de Polignac number, because 97676809 - 2¹¹ = 97674761 is a prime.

It is not a weakly prime, because it can be changed into another prime (97676819) 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, 48838404 + 48838405.

It is an arithmetic number, because the mean of its divisors is an integer number (48838405).

Almost surely, 2^97676809 is an apocalyptic number.

It is an amenable number.

97676809 is a deficient number, since it is larger than the sum of its proper divisors (1).

97676809 is an equidigital number, since it uses as much as digits as its factorization.

97676809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 97676809 is about 9883.1578455471. The cubic root of 97676809 is about 460.5362507974.

The spelling of 97676809 in words is "ninety-seven million, six hundred seventy-six thousand, eight hundred nine".