684276540 has 48 divisors (see below), whose sum is σ = 1928858400. Its totient is φ = 181246720.

The previous prime is 684276533. The next prime is 684276553. The reversal of 684276540 is 45672486.

684276540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 684276492 and 684276501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29331 + ... + 47210.

It is an arithmetic number, because the mean of its divisors is an integer number (40184550).

Almost surely, 2^684276540 is an apocalyptic number.

684276540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

684276540 is an abundant number, since it is smaller than the sum of its proper divisors (1244581860).

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

684276540 is a wasteful number, since it uses less digits than its factorization.

684276540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76702 (or 76700 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 684276540 is about 26158.6800125694. The cubic root of 684276540 is about 881.2055361098.

The spelling of 684276540 in words is "six hundred eighty-four million, two hundred seventy-six thousand, five hundred forty".