97738637 has 2 divisors, whose sum is σ = 97738638. Its totient is φ = 97738636.

The previous prime is 97738591. The next prime is 97738639. The reversal of 97738637 is 73683779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 538756 = 9859^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 97738637 - 2⁶ = 97738573 is a prime.

Together with 97738639, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97738639) 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, 48869318 + 48869319.

It is an arithmetic number, because the mean of its divisors is an integer number (48869319).

Almost surely, 2^97738637 is an apocalyptic number.

It is an amenable number.

97738637 is a deficient number, since it is larger than the sum of its proper divisors (1).

97738637 is an equidigital number, since it uses as much as digits as its factorization.

97738637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 97738637 is about 9886.2852983312. The cubic root of 97738637 is about 460.6334012191.

The spelling of 97738637 in words is "ninety-seven million, seven hundred thirty-eight thousand, six hundred thirty-seven".