689578359873 has 8 divisors (see below), whose sum is σ = 990163798848. Its totient is φ = 424355913744.

The previous prime is 689578359863. The next prime is 689578359881. The reversal of 689578359873 is 378953875986.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-689578359873 is a prime.

It is a super-2 number, since 2×689578359873² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689578359863) 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, 8840748165 + ... + 8840748242.

It is an arithmetic number, because the mean of its divisors is an integer number (123770474856).

Almost surely, 2^689578359873 is an apocalyptic number.

It is an amenable number.

689578359873 is a deficient number, since it is larger than the sum of its proper divisors (300585438975).

689578359873 is a wasteful number, since it uses less digits than its factorization.

689578359873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17681496423.

The product of its digits is 2743372800, while the sum is 78.

The spelling of 689578359873 in words is "six hundred eighty-nine billion, five hundred seventy-eight million, three hundred fifty-nine thousand, eight hundred seventy-three".