689895137773 has 2 divisors, whose sum is σ = 689895137774. Its totient is φ = 689895137772.

The previous prime is 689895137749. The next prime is 689895137801. The reversal of 689895137773 is 377731598986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686374139529 + 3520998244 = 828477^2 + 59338^2 .

It is a cyclic number.

It is not a de Polignac number, because 689895137773 - 2⁵ = 689895137741 is a prime.

It is a super-2 number, since 2×689895137773² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689895137696 and 689895137705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689895135773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344947568886 + 344947568887.

It is an arithmetic number, because the mean of its divisors is an integer number (344947568887).

Almost surely, 2^689895137773 is an apocalyptic number.

It is an amenable number.

689895137773 is a deficient number, since it is larger than the sum of its proper divisors (1).

689895137773 is an equidigital number, since it uses as much as digits as its factorization.

689895137773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480090240, while the sum is 73.

The spelling of 689895137773 in words is "six hundred eighty-nine billion, eight hundred ninety-five million, one hundred thirty-seven thousand, seven hundred seventy-three".