1680421060 has 12 divisors (see below), whose sum is σ = 3528884268. Its totient is φ = 672168416.

The previous prime is 1680421051. The next prime is 1680421109. The reversal of 1680421060 is 601240861.

It can be written as a sum of positive squares in 2 ways, for example, as 1241434756 + 438986304 = 35234^2 + 20952^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42010507 + ... + 42010546.

It is an arithmetic number, because the mean of its divisors is an integer number (294073689).

Almost surely, 2^1680421060 is an apocalyptic number.

1680421060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1680421060 is an abundant number, since it is smaller than the sum of its proper divisors (1848463208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680421060 is a wasteful number, since it uses less digits than its factorization.

1680421060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84021062 (or 84021060 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1680421060 is about 40992.9391481021. The cubic root of 1680421060 is about 1188.8836976446.

It can be divided in two parts, 1680 and 421060, that added together give a triangular number (422740 = T₉₁₉).

The spelling of 1680421060 in words is "one billion, six hundred eighty million, four hundred twenty-one thousand, sixty".