1683720684850 has 48 divisors (see below), whose sum is σ = 3297154593600. Its totient is φ = 637924092480.

The previous prime is 1683720684827. The next prime is 1683720684857. The reversal of 1683720684850 is 584860273861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1683720684857) 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, 5090316 + ... + 5410984.

It is an arithmetic number, because the mean of its divisors is an integer number (68690720700).

Almost surely, 2^{1683720684850} is an apocalyptic number.

1683720684850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1683720684850 is a deficient number, since it is larger than the sum of its proper divisors (1613433908750).

1683720684850 is a wasteful number, since it uses less digits than its factorization.

1683720684850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326227 (or 326222 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 1683720684850 in words is "one trillion, six hundred eighty-three billion, seven hundred twenty million, six hundred eighty-four thousand, eight hundred fifty".