1683871697 has 8 divisors (see below), whose sum is σ = 1703742312. Its totient is φ = 1664064000.

The previous prime is 1683871687. The next prime is 1683871703. The reversal of 1683871697 is 7961783861.

It can be written as a sum of positive squares in 4 ways, for example, as 189585361 + 1494286336 = 13769^2 + 38656^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1683871697 - 2¹⁰ = 1683870673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1683871627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39233 + ... + 70049.

It is an arithmetic number, because the mean of its divisors is an integer number (212967789).

Almost surely, 2^1683871697 is an apocalyptic number.

It is an amenable number.

1683871697 is a deficient number, since it is larger than the sum of its proper divisors (19870615).

1683871697 is a wasteful number, since it uses less digits than its factorization.

1683871697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31459.

The product of its digits is 3048192, while the sum is 56.

The square root of 1683871697 is about 41035.0057511876. The cubic root of 1683871697 is about 1189.6969067787.

The spelling of 1683871697 in words is "one billion, six hundred eighty-three million, eight hundred seventy-one thousand, six hundred ninety-seven".