97636309 has 2 divisors, whose sum is σ = 97636310. Its totient is φ = 97636308.

The previous prime is 97636283. The next prime is 97636351. The reversal of 97636309 is 90363679.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 47651409 = 7070^2 + 6903^2 .

It is a cyclic number.

It is not a de Polignac number, because 97636309 - 2¹³ = 97628117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97636369) 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, 48818154 + 48818155.

It is an arithmetic number, because the mean of its divisors is an integer number (48818155).

Almost surely, 2^97636309 is an apocalyptic number.

It is an amenable number.

97636309 is a deficient number, since it is larger than the sum of its proper divisors (1).

97636309 is an equidigital number, since it uses as much as digits as its factorization.

97636309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 43.

The square root of 97636309 is about 9881.1086928543. The cubic root of 97636309 is about 460.4725908669.

The spelling of 97636309 in words is "ninety-seven million, six hundred thirty-six thousand, three hundred nine".