689828986 has 24 divisors (see below), whose sum is σ = 1299846240. Its totient is φ = 268763880.

The previous prime is 689828969. The next prime is 689828989.

689828986 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (689828989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201916 + ... + 205303.

It is an arithmetic number, because the mean of its divisors is an integer number (54160260).

Almost surely, 2^689828986 is an apocalyptic number.

689828986 is a deficient number, since it is larger than the sum of its proper divisors (610017254).

689828986 is a wasteful number, since it uses less digits than its factorization.

689828986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407250 (or 407239 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 64.

The square root of 689828986 is about 26264.5956755477. The cubic root of 689828986 is about 883.5825825960.

The spelling of 689828986 in words is "six hundred eighty-nine million, eight hundred twenty-eight thousand, nine hundred eighty-six".