97097647 has 2 divisors, whose sum is σ = 97097648. Its totient is φ = 97097646.

The previous prime is 97097599. The next prime is 97097669. The reversal of 97097647 is 74679079.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97097647 - 2¹⁹ = 96573359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97097647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97097687) 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, 48548823 + 48548824.

It is an arithmetic number, because the mean of its divisors is an integer number (48548824).

Almost surely, 2^97097647 is an apocalyptic number.

97097647 is a deficient number, since it is larger than the sum of its proper divisors (1).

97097647 is an equidigital number, since it uses as much as digits as its factorization.

97097647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 97097647 is about 9853.8138301878. The cubic root of 97097647 is about 459.6242157814.

The spelling of 97097647 in words is "ninety-seven million, ninety-seven thousand, six hundred forty-seven".