689543108 has 24 divisors (see below), whose sum is σ = 1226292480. Its totient is φ = 339197760.

The previous prime is 689543087. The next prime is 689543111. The reversal of 689543108 is 801345986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123113 + ... + 128591.

It is an arithmetic number, because the mean of its divisors is an integer number (51095520).

Almost surely, 2^689543108 is an apocalyptic number.

It is an amenable number.

689543108 is a deficient number, since it is larger than the sum of its proper divisors (536749372).

689543108 is a wasteful number, since it uses less digits than its factorization.

689543108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987 (or 5985 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 689543108 is about 26259.1528423900. The cubic root of 689543108 is about 883.4605080295.

The spelling of 689543108 in words is "six hundred eighty-nine million, five hundred forty-three thousand, one hundred eight".