1684768057 has 16 divisors (see below), whose sum is σ = 2028044160. Its totient is φ = 1367235072.

The previous prime is 1684768039. The next prime is 1684768073. The reversal of 1684768057 is 7508674861.

It is not a de Polignac number, because 1684768057 - 2²⁷ = 1550550329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1684767995 and 1684768013.

It is not an unprimeable number, because it can be changed into a prime (1684768097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299523 + ... + 305095.

It is an arithmetic number, because the mean of its divisors is an integer number (126752760).

Almost surely, 2^1684768057 is an apocalyptic number.

It is an amenable number.

1684768057 is a deficient number, since it is larger than the sum of its proper divisors (343276103).

1684768057 is a wasteful number, since it uses less digits than its factorization.

1684768057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 1684768057 is about 41045.9261924981. The cubic root of 1684768057 is about 1189.9079694853.

The spelling of 1684768057 in words is "one billion, six hundred eighty-four million, seven hundred sixty-eight thousand, fifty-seven".