69798689797 has 4 divisors (see below), whose sum is σ = 69799262220. Its totient is φ = 69798117376.

The previous prime is 69798689773. The next prime is 69798689827. The reversal of 69798689797 is 79798689796.

It is a happy number.

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 55923263361 + 13875426436 = 236481^2 + 117794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69798689797 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 (69798689707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22018 + ... + 374275.

It is an arithmetic number, because the mean of its divisors is an integer number (17449815555).

Almost surely, 2^69798689797 is an apocalyptic number.

It is an amenable number.

69798689797 is a deficient number, since it is larger than the sum of its proper divisors (572423).

69798689797 is a wasteful number, since it uses less digits than its factorization.

69798689797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572422.

The product of its digits is 5184974592, while the sum is 85.

Subtracting 69798689797 from its reverse (79798689796), we obtain a palindrome (9999999999).

The spelling of 69798689797 in words is "sixty-nine billion, seven hundred ninety-eight million, six hundred eighty-nine thousand, seven hundred ninety-seven".