689928829986 has 32 divisors (see below), whose sum is σ = 1523435413248. Its totient is φ = 206550433040.

The previous prime is 689928829969. The next prime is 689928830009.

689928829986 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 689928829899 and 689928829908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62967216 + ... + 62978171.

It is an arithmetic number, because the mean of its divisors is an integer number (47607356664).

Almost surely, 2^689928829986 is an apocalyptic number.

689928829986 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

689928829986 is an abundant number, since it is smaller than the sum of its proper divisors (833506583262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689928829986 is a wasteful number, since it uses less digits than its factorization.

689928829986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125945486.

The product of its digits is 3869835264, while the sum is 84.

The spelling of 689928829986 in words is "six hundred eighty-nine billion, nine hundred twenty-eight million, eight hundred twenty-nine thousand, nine hundred eighty-six".