689095590987 has 8 divisors (see below), whose sum is σ = 958741691904. Its totient is φ = 439423275368.

The previous prime is 689095590979. The next prime is 689095591021. The reversal of 689095590987 is 789095590986.

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

It is a cyclic number.

It is not a de Polignac number, because 689095590987 - 2³ = 689095590979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689093590987) 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, 4993446243 + ... + 4993446380.

It is an arithmetic number, because the mean of its divisors is an integer number (119842711488).

Almost surely, 2^689095590987 is an apocalyptic number.

689095590987 is a deficient number, since it is larger than the sum of its proper divisors (269646100917).

689095590987 is a wasteful number, since it uses less digits than its factorization.

689095590987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9986892649.

The product of its (nonzero) digits is 440899200, while the sum is 75.

Subtracting 689095590987 from its reverse (789095590986), we obtain a palindrome (99999999999).

The spelling of 689095590987 in words is "six hundred eighty-nine billion, ninety-five million, five hundred ninety thousand, nine hundred eighty-seven".