1682621716 has 12 divisors (see below), whose sum is σ = 3117799188. Its totient is φ = 791821952.

The previous prime is 1682621683. The next prime is 1682621729. The reversal of 1682621716 is 6171262861.

It can be written as a sum of positive squares in 2 ways, for example, as 750540816 + 932080900 = 27396^2 + 30530^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12372151 + ... + 12372286.

It is an arithmetic number, because the mean of its divisors is an integer number (259816599).

Almost surely, 2^1682621716 is an apocalyptic number.

It is an amenable number.

1682621716 is a deficient number, since it is larger than the sum of its proper divisors (1435177472).

1682621716 is a wasteful number, since it uses less digits than its factorization.

1682621716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24744458 (or 24744456 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 1682621716 is about 41019.7722568032. The cubic root of 1682621716 is about 1189.4024530991.

The spelling of 1682621716 in words is "one billion, six hundred eighty-two million, six hundred twenty-one thousand, seven hundred sixteen".