97985737 has 2 divisors, whose sum is σ = 97985738. Its totient is φ = 97985736.

The previous prime is 97985689. The next prime is 97985743. The reversal of 97985737 is 73758979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97298496 + 687241 = 9864^2 + 829^2 .

It is a cyclic number.

It is not a de Polignac number, because 97985737 - 2¹¹ = 97983689 is a prime.

It is not a weakly prime, because it can be changed into another prime (97983737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48992868 + 48992869.

It is an arithmetic number, because the mean of its divisors is an integer number (48992869).

Almost surely, 2^97985737 is an apocalyptic number.

It is an amenable number.

97985737 is a deficient number, since it is larger than the sum of its proper divisors (1).

97985737 is an equidigital number, since it uses as much as digits as its factorization.

97985737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The square root of 97985737 is about 9898.7745201111. The cubic root of 97985737 is about 461.0212612319.

The spelling of 97985737 in words is "ninety-seven million, nine hundred eighty-five thousand, seven hundred thirty-seven".