684827960 has 32 divisors (see below), whose sum is σ = 1542054240. Its totient is φ = 273719424.

The previous prime is 684827917. The next prime is 684827977. The reversal of 684827960 is 69728486.

It is a junction number, because it is equal to n+sod(n) for n = 684827899 and 684827908.

It is a congruent number.

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, 52229 + ... + 64011.

It is an arithmetic number, because the mean of its divisors is an integer number (48189195).

Almost surely, 2^684827960 is an apocalyptic number.

It is an amenable number.

684827960 is an abundant number, since it is smaller than the sum of its proper divisors (857226280).

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

684827960 is a wasteful number, since it uses less digits than its factorization.

684827960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247 (or 13243 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 684827960 is about 26169.2177949590. The cubic root of 684827960 is about 881.4421772254.

The spelling of 684827960 in words is "six hundred eighty-four million, eight hundred twenty-seven thousand, nine hundred sixty".