684044683450 has 48 divisors (see below), whose sum is σ = 1280409182496. Its totient is φ = 271879675200.

The previous prime is 684044683417. The next prime is 684044683453. The reversal of 684044683450 is 54386440486.

684044683450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (684044683453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68805480 + ... + 68815420.

It is an arithmetic number, because the mean of its divisors is an integer number (26675191302).

Almost surely, 2^684044683450 is an apocalyptic number.

684044683450 is a deficient number, since it is larger than the sum of its proper divisors (596364499046).

684044683450 is a wasteful number, since it uses less digits than its factorization.

684044683450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18559 (or 18554 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 52.

The spelling of 684044683450 in words is "six hundred eighty-four billion, forty-four million, six hundred eighty-three thousand, four hundred fifty".