68897296693 has 4 divisors (see below), whose sum is σ = 69048057100. Its totient is φ = 68746536288.

The previous prime is 68897296667. The next prime is 68897296717. The reversal of 68897296693 is 39669279886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40323451249 + 28573845444 = 200807^2 + 169038^2 .

It is a cyclic number.

It is not a de Polignac number, because 68897296693 - 2⁵ = 68897296661 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 (68897296603) 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, 75379518 + ... + 75380431.

It is an arithmetic number, because the mean of its divisors is an integer number (17262014275).

Almost surely, 2^68897296693 is an apocalyptic number.

It is an amenable number.

68897296693 is a deficient number, since it is larger than the sum of its proper divisors (150760407).

68897296693 is a wasteful number, since it uses less digits than its factorization.

68897296693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150760406.

The product of its digits is 423263232, while the sum is 73.

The spelling of 68897296693 in words is "sixty-eight billion, eight hundred ninety-seven million, two hundred ninety-six thousand, six hundred ninety-three".