689216608 has 24 divisors (see below), whose sum is σ = 1358953848. Its totient is φ = 344085504.

The previous prime is 689216587. The next prime is 689216629. The reversal of 689216608 is 806612986.

It is an interprime number because it is at equal distance from previous prime (689216587) and next prime (689216629).

It is a congruent number.

It is an unprimeable number.

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, 5535 + ... + 37537.

It is an arithmetic number, because the mean of its divisors is an integer number (56623077).

Almost surely, 2^689216608 is an apocalyptic number.

It is an amenable number.

689216608 is a deficient number, since it is larger than the sum of its proper divisors (669737240).

689216608 is a wasteful number, since it uses less digits than its factorization.

689216608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32686 (or 32678 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 689216608 is about 26252.9352263704. The cubic root of 689216608 is about 883.3210459269.

The spelling of 689216608 in words is "six hundred eighty-nine million, two hundred sixteen thousand, six hundred eight".