689906845033 has 8 divisors (see below), whose sum is σ = 789484978368. Its totient is φ = 590583714864.

The previous prime is 689906844947. The next prime is 689906845057. The reversal of 689906845033 is 330548609986.

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-689906845033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689946845033) 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, 63744991 + ... + 63755812.

It is an arithmetic number, because the mean of its divisors is an integer number (98685622296).

Almost surely, 2^689906845033 is an apocalyptic number.

It is an amenable number.

689906845033 is a deficient number, since it is larger than the sum of its proper divisors (99578133335).

689906845033 is a wasteful number, since it uses less digits than its factorization.

689906845033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127501583.

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 689906845033 in words is "six hundred eighty-nine billion, nine hundred six million, eight hundred forty-five thousand, thirty-three".