689039698 has 8 divisors (see below), whose sum is σ = 1034173692. Its totient is φ = 344315136.

The previous prime is 689039683. The next prime is 689039711. The reversal of 689039698 is 896930986.

It can be written as a sum of positive squares in 2 ways, for example, as 688905009 + 134689 = 26247^2 + 367^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98115 + ... + 104902.

Almost surely, 2^689039698 is an apocalyptic number.

689039698 is a deficient number, since it is larger than the sum of its proper divisors (345133994).

689039698 is a wasteful number, since it uses less digits than its factorization.

689039698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204716.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 689039698 is about 26249.5656725973. The cubic root of 689039698 is about 883.2454617072.

The spelling of 689039698 in words is "six hundred eighty-nine million, thirty-nine thousand, six hundred ninety-eight".