689120021986 has 16 divisors (see below), whose sum is σ = 1127902758048. Its totient is φ = 313166425600.

The previous prime is 689120021927. The next prime is 689120022023.

689120021986 is nontrivially palindromic in base 10.

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, 3396580 + ... + 3593743.

It is an arithmetic number, because the mean of its divisors is an integer number (70493922378).

Almost surely, 2^689120021986 is an apocalyptic number.

689120021986 is a deficient number, since it is larger than the sum of its proper divisors (438782736062).

689120021986 is a wasteful number, since it uses less digits than its factorization.

689120021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994817.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 689120021986 in words is "six hundred eighty-nine billion, one hundred twenty million, twenty-one thousand, nine hundred eighty-six".