689111012623513 has 2 divisors, whose sum is σ = 689111012623514. Its totient is φ = 689111012623512.

The previous prime is 689111012623471. The next prime is 689111012623591. The reversal of 689111012623513 is 315326210111986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672913068162624 + 16197944460889 = 25940568^2 + 4024667^2 .

It is a cyclic number.

It is not a de Polignac number, because 689111012623513 - 2¹³ = 689111012615321 is a prime.

It is a super-2 number, since 2×689111012623513² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (689111012626513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344555506311756 + 344555506311757.

It is an arithmetic number, because the mean of its divisors is an integer number (344555506311757).

Almost surely, 2^{689111012623513} is an apocalyptic number.

It is an amenable number.

689111012623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

689111012623513 is an equidigital number, since it uses as much as digits as its factorization.

689111012623513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 689111012623513 in words is "six hundred eighty-nine trillion, one hundred eleven billion, twelve million, six hundred twenty-three thousand, five hundred thirteen".