689601303553 has 8 divisors (see below), whose sum is σ = 708250961448. Its totient is φ = 670952265984.

The previous prime is 689601303449. The next prime is 689601303577. The reversal of 689601303553 is 355303106986.

It can be written as a sum of positive squares in 4 ways, for example, as 433415505649 + 256185797904 = 658343^2 + 506148^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689601303553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 689601303497 and 689601303506.

It is not an unprimeable number, because it can be changed into a prime (689601303593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2902425 + ... + 3131017.

It is an arithmetic number, because the mean of its divisors is an integer number (88531370181).

Almost surely, 2^689601303553 is an apocalyptic number.

It is an amenable number.

689601303553 is a deficient number, since it is larger than the sum of its proper divisors (18649657895).

689601303553 is a wasteful number, since it uses less digits than its factorization.

689601303553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310163.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 689601303553 in words is "six hundred eighty-nine billion, six hundred one million, three hundred three thousand, five hundred fifty-three".