684834368 has 28 divisors (see below), whose sum is σ = 1387888512. Its totient is φ = 335130240.

The previous prime is 684834349. The next prime is 684834427. The reversal of 684834368 is 863438486.

It is a super-2 number, since 2×684834368² = 937996223187918848, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 110828 + ... + 116843.

Almost surely, 2^684834368 is an apocalyptic number.

It is an amenable number.

684834368 is an abundant number, since it is smaller than the sum of its proper divisors (703054144).

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

684834368 is a wasteful number, since it uses less digits than its factorization.

684834368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227730 (or 227720 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 50.

The square root of 684834368 is about 26169.3402285958. The cubic root of 684834368 is about 881.4449264628. Note that the first 3 decimals are identical.

The spelling of 684834368 in words is "six hundred eighty-four million, eight hundred thirty-four thousand, three hundred sixty-eight".