97891717 has 8 divisors (see below), whose sum is σ = 122046912. Its totient is φ = 76279200.

The previous prime is 97891697. The next prime is 97891753. The reversal of 97891717 is 71719879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97891717 - 2⁷ = 97891589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97891817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635584 + ... + 635737.

It is an arithmetic number, because the mean of its divisors is an integer number (15255864).

Almost surely, 2^97891717 is an apocalyptic number.

It is an amenable number.

97891717 is a deficient number, since it is larger than the sum of its proper divisors (24155195).

97891717 is a wasteful number, since it uses less digits than its factorization.

97891717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271339.

The product of its digits is 222264, while the sum is 49.

The square root of 97891717 is about 9894.0243076313. The cubic root of 97891717 is about 460.8737598665.

The spelling of 97891717 in words is "ninety-seven million, eight hundred ninety-one thousand, seven hundred seventeen".