97564837 has 2 divisors, whose sum is σ = 97564838. Its totient is φ = 97564836.

The previous prime is 97564823. The next prime is 97564877. The reversal of 97564837 is 73846579.

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., 86099841 + 11464996 = 9279^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 97564837 - 2¹¹ = 97562789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97564877) 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, 48782418 + 48782419.

It is an arithmetic number, because the mean of its divisors is an integer number (48782419).

Almost surely, 2^97564837 is an apocalyptic number.

It is an amenable number.

97564837 is a deficient number, since it is larger than the sum of its proper divisors (1).

97564837 is an equidigital number, since it uses as much as digits as its factorization.

97564837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 97564837 is about 9877.4914325450. The cubic root of 97564837 is about 460.3602046343.

The spelling of 97564837 in words is "ninety-seven million, five hundred sixty-four thousand, eight hundred thirty-seven".