684260056 has 8 divisors (see below), whose sum is σ = 1282987620. Its totient is φ = 342130024.

The previous prime is 684260041. The next prime is 684260089. The reversal of 684260056 is 650062486.

684260056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 684259997 and 684260024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42766246 + ... + 42766261.

Almost surely, 2^684260056 is an apocalyptic number.

It is an amenable number.

684260056 is a deficient number, since it is larger than the sum of its proper divisors (598727564).

684260056 is a wasteful number, since it uses less digits than its factorization.

684260056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85532513 (or 85532509 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 684260056 is about 26158.3649336116. The cubic root of 684260056 is about 881.1984600677.

The spelling of 684260056 in words is "six hundred eighty-four million, two hundred sixty thousand, fifty-six".