689677776986 has 8 divisors (see below), whose sum is σ = 1128563635104. Its totient is φ = 313489898620.

The previous prime is 689677776971. The next prime is 689677776989.

689677776986 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 689677776898 and 689677776907.

It is not an unprimeable number, because it can be changed into a prime (689677776989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15674494910 + ... + 15674494953.

It is an arithmetic number, because the mean of its divisors is an integer number (141070454388).

Almost surely, 2^689677776986 is an apocalyptic number.

689677776986 is a deficient number, since it is larger than the sum of its proper divisors (438885858118).

689677776986 is a wasteful number, since it uses less digits than its factorization.

689677776986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31348989876.

The product of its digits is 16131032064, while the sum is 86.

The spelling of 689677776986 in words is "six hundred eighty-nine billion, six hundred seventy-seven million, seven hundred seventy-six thousand, nine hundred eighty-six".