689587016 has 8 divisors (see below), whose sum is σ = 1292975670. Its totient is φ = 344793504.

The previous prime is 689587009. The next prime is 689587039. The reversal of 689587016 is 610785986.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 665124100 + 24462916 = 25790^2 + 4946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 43099181 + ... + 43099196.

Almost surely, 2^689587016 is an apocalyptic number.

It is an amenable number.

689587016 is a deficient number, since it is larger than the sum of its proper divisors (603388654).

689587016 is a wasteful number, since it uses less digits than its factorization.

689587016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86198383 (or 86198379 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 689587016 is about 26259.9888804241. The cubic root of 689587016 is about 883.4792596542.

The spelling of 689587016 in words is "six hundred eighty-nine million, five hundred eighty-seven thousand, sixteen".