689445698 has 8 divisors (see below), whose sum is σ = 1035446160. Its totient is φ = 344296980.

The previous prime is 689445697. The next prime is 689445707. The reversal of 689445698 is 896544986.

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

It is not an unprimeable number, because it can be changed into a prime (689445697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210908 + ... + 214151.

It is an arithmetic number, because the mean of its divisors is an integer number (129430770).

Almost surely, 2^689445698 is an apocalyptic number.

689445698 is a deficient number, since it is larger than the sum of its proper divisors (346000462).

689445698 is a wasteful number, since it uses less digits than its factorization.

689445698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425872.

The product of its digits is 14929920, while the sum is 59.

The square root of 689445698 is about 26257.2979950337. The cubic root of 689445698 is about 883.4189046646.

The spelling of 689445698 in words is "six hundred eighty-nine million, four hundred forty-five thousand, six hundred ninety-eight".