689555498 has 16 divisors (see below), whose sum is σ = 1039426560. Its totient is φ = 343084896.

The previous prime is 689555459. The next prime is 689555521. The reversal of 689555498 is 894555986.

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, 471893 + ... + 473351.

It is an arithmetic number, because the mean of its divisors is an integer number (64964160).

Almost surely, 2^689555498 is an apocalyptic number.

689555498 is a deficient number, since it is larger than the sum of its proper divisors (349871062).

689555498 is a wasteful number, since it uses less digits than its factorization.

689555498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its digits is 15552000, while the sum is 59.

The square root of 689555498 is about 26259.3887590705. The cubic root of 689555498 is about 883.4657994609.

The spelling of 689555498 in words is "six hundred eighty-nine million, five hundred fifty-five thousand, four hundred ninety-eight".