684518466 has 32 divisors (see below), whose sum is σ = 1378840320. Its totient is φ = 226545536.

The previous prime is 684518449. The next prime is 684518503. The reversal of 684518466 is 664815486.

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 15 ways as a sum of consecutive naturals, for example, 798310 + ... + 799166.

It is an arithmetic number, because the mean of its divisors is an integer number (43088760).

Almost surely, 2^684518466 is an apocalyptic number.

684518466 is an abundant number, since it is smaller than the sum of its proper divisors (694321854).

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

684518466 is a wasteful number, since it uses less digits than its factorization.

684518466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658.

The product of its digits is 1105920, while the sum is 48.

The square root of 684518466 is about 26163.3038051390. The cubic root of 684518466 is about 881.3093739585.

The spelling of 684518466 in words is "six hundred eighty-four million, five hundred eighteen thousand, four hundred sixty-six".