1684480673 has 4 divisors (see below), whose sum is σ = 1692945600. Its totient is φ = 1676015748.

The previous prime is 1684480669. The next prime is 1684480691. The reversal of 1684480673 is 3760844861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1684480673 - 2² = 1684480669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1684480073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4232165 + ... + 4232562.

It is an arithmetic number, because the mean of its divisors is an integer number (423236400).

Almost surely, 2^1684480673 is an apocalyptic number.

It is an amenable number.

1684480673 is a deficient number, since it is larger than the sum of its proper divisors (8464927).

1684480673 is an equidigital number, since it uses as much as digits as its factorization.

1684480673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464926.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 1684480673 is about 41042.4252816522. The cubic root of 1684480673 is about 1189.8403083502.

The spelling of 1684480673 in words is "one billion, six hundred eighty-four million, four hundred eighty thousand, six hundred seventy-three".