684959016 has 32 divisors (see below), whose sum is σ = 1957026240. Its totient is φ = 195702528.

The previous prime is 684958991. The next prime is 684959039. The reversal of 684959016 is 610959486.

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 7 ways as a sum of consecutive naturals, for example, 2038401 + ... + 2038736.

It is an arithmetic number, because the mean of its divisors is an integer number (61157070).

Almost surely, 2^684959016 is an apocalyptic number.

It is an amenable number.

684959016 is an abundant number, since it is smaller than the sum of its proper divisors (1272067224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684959016 is a wasteful number, since it uses less digits than its factorization.

684959016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077153 (or 4077149 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 684959016 is about 26171.7216858196. The cubic root of 684959016 is about 881.4984010386.

The spelling of 684959016 in words is "six hundred eighty-four million, nine hundred fifty-nine thousand, sixteen".