1685695966 has 16 divisors (see below), whose sum is σ = 2547180000. Its totient is φ = 836656128.

The previous prime is 1685695939. The next prime is 1685695981. The reversal of 1685695966 is 6695965861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173986 + ... + 183418.

It is an arithmetic number, because the mean of its divisors is an integer number (159198750).

Almost surely, 2^1685695966 is an apocalyptic number.

1685695966 is a deficient number, since it is larger than the sum of its proper divisors (861484034).

1685695966 is a wasteful number, since it uses less digits than its factorization.

1685695966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10083.

The product of its digits is 20995200, while the sum is 61.

The square root of 1685695966 is about 41057.2279385737. The cubic root of 1685695966 is about 1190.1263820767.

The spelling of 1685695966 in words is "one billion, six hundred eighty-five million, six hundred ninety-five thousand, nine hundred sixty-six".