689696627573 has 2 divisors, whose sum is σ = 689696627574. Its totient is φ = 689696627572.

The previous prime is 689696627549. The next prime is 689696627693. The reversal of 689696627573 is 375726696986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469090749604 + 220605877969 = 684902^2 + 469687^2 .

It is a cyclic number.

It is not a de Polignac number, because 689696627573 - 2³² = 685401660277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 689696627573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689690627573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344848313786 + 344848313787.

It is an arithmetic number, because the mean of its divisors is an integer number (344848313787).

Almost surely, 2^689696627573 is an apocalyptic number.

It is an amenable number.

689696627573 is a deficient number, since it is larger than the sum of its proper divisors (1).

689696627573 is an equidigital number, since it uses as much as digits as its factorization.

689696627573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234517760, while the sum is 74.

The spelling of 689696627573 in words is "six hundred eighty-nine billion, six hundred ninety-six million, six hundred twenty-seven thousand, five hundred seventy-three".