97917641 has 2 divisors, whose sum is σ = 97917642. Its totient is φ = 97917640.

The previous prime is 97917607. The next prime is 97917649. The reversal of 97917641 is 14671979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87703225 + 10214416 = 9365^2 + 3196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97917641 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97917592 and 97917601.

It is not a weakly prime, because it can be changed into another prime (97917649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48958820 + 48958821.

It is an arithmetic number, because the mean of its divisors is an integer number (48958821).

Almost surely, 2^97917641 is an apocalyptic number.

It is an amenable number.

97917641 is a deficient number, since it is larger than the sum of its proper divisors (1).

97917641 is an equidigital number, since it uses as much as digits as its factorization.

97917641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 44.

The square root of 97917641 is about 9895.3343046104. The cubic root of 97917641 is about 460.9144396338.

The spelling of 97917641 in words is "ninety-seven million, nine hundred seventeen thousand, six hundred forty-one".