684763574860 has 24 divisors (see below), whose sum is σ = 1439807811120. Its totient is φ = 273561753024.

The previous prime is 684763574849. The next prime is 684763574863. The reversal of 684763574860 is 68475367486.

It is a junction number, because it is equal to n+sod(n) for n = 684763574792 and 684763574801.

It is not an unprimeable number, because it can be changed into a prime (684763574863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21463470 + ... + 21495349.

It is an arithmetic number, because the mean of its divisors is an integer number (59991992130).

Almost surely, 2^684763574860 is an apocalyptic number.

It is an amenable number.

684763574860 is an abundant number, since it is smaller than the sum of its proper divisors (755044236260).

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

684763574860 is a wasteful number, since it uses less digits than its factorization.

684763574860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42959625 (or 42959623 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 64.

The spelling of 684763574860 in words is "six hundred eighty-four billion, seven hundred sixty-three million, five hundred seventy-four thousand, eight hundred sixty".