97697322917 has 4 divisors (see below), whose sum is σ = 97697960940. Its totient is φ = 97696684896.

The previous prime is 97697322889. The next prime is 97697322929. The reversal of 97697322917 is 71922379679.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17658688996 + 80038633921 = 132886^2 + 282911^2 .

It is a cyclic number.

It is not a de Polignac number, because 97697322917 - 2¹⁴ = 97697306533 is a prime.

It is a deceptive number, since it divides R_97697322916.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97697322917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97697322937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63803 + ... + 446615.

It is an arithmetic number, because the mean of its divisors is an integer number (24424490235).

Almost surely, 2^97697322917 is an apocalyptic number.

97697322917 is the 255209-th pentagonal number.

It is an amenable number.

97697322917 is a deficient number, since it is larger than the sum of its proper divisors (638023).

97697322917 is a wasteful number, since it uses less digits than its factorization.

97697322917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638022.

The product of its digits is 18003384, while the sum is 62.

The spelling of 97697322917 in words is "ninety-seven billion, six hundred ninety-seven million, three hundred twenty-two thousand, nine hundred seventeen".