1680835966 has 16 divisors (see below), whose sum is σ = 2561204448. Its totient is φ = 827142400.

The previous prime is 1680835957. The next prime is 1680835999. The reversal of 1680835966 is 6695380861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74226 + ... + 94186.

It is an arithmetic number, because the mean of its divisors is an integer number (160075278).

Almost surely, 2^1680835966 is an apocalyptic number.

1680835966 is a deficient number, since it is larger than the sum of its proper divisors (880368482).

1680835966 is a wasteful number, since it uses less digits than its factorization.

1680835966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20627.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 1680835966 is about 40997.9995365628. Note that the first 3 decimals coincide. The cubic root of 1680835966 is about 1188.9815370888.

The spelling of 1680835966 in words is "one billion, six hundred eighty million, eight hundred thirty-five thousand, nine hundred sixty-six".