689067988835 has 8 divisors (see below), whose sum is σ = 835068533616. Its totient is φ = 545796426400.

The previous prime is 689067988783. The next prime is 689067988867. The reversal of 689067988835 is 538889760986.

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

It is not a de Polignac number, because 689067988835 - 2¹⁸ = 689067726691 is a prime.

It is a super-2 number, since 2×689067988835² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682245029 + ... + 682246038.

It is an arithmetic number, because the mean of its divisors is an integer number (104383566702).

Almost surely, 2^689067988835 is an apocalyptic number.

689067988835 is a deficient number, since it is larger than the sum of its proper divisors (146000544781).

689067988835 is a wasteful number, since it uses less digits than its factorization.

689067988835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364491173.

The product of its (nonzero) digits is 1254113280, while the sum is 77.

The spelling of 689067988835 in words is "six hundred eighty-nine billion, sixty-seven million, nine hundred eighty-eight thousand, eight hundred thirty-five".