97943617 has 2 divisors, whose sum is σ = 97943618. Its totient is φ = 97943616.

The previous prime is 97943597. The next prime is 97943623. The reversal of 97943617 is 71634979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96118416 + 1825201 = 9804^2 + 1351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97943617 is a prime.

It is a super-2 number, since 2×97943617² = 19185904222085378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97943017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48971808 + 48971809.

It is an arithmetic number, because the mean of its divisors is an integer number (48971809).

Almost surely, 2^97943617 is an apocalyptic number.

It is an amenable number.

97943617 is a deficient number, since it is larger than the sum of its proper divisors (1).

97943617 is an equidigital number, since it uses as much as digits as its factorization.

97943617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 97943617 is about 9896.6467553409. The cubic root of 97943617 is about 460.9551937982.

The spelling of 97943617 in words is "ninety-seven million, nine hundred forty-three thousand, six hundred seventeen".