2105716 has 6 divisors (see below), whose sum is σ = 3685010. Its totient is φ = 1052856.

The previous prime is 2105699. The next prime is 2105717. The reversal of 2105716 is 6175012.

It can be written as a sum of positive squares in only one way, i.e., 1449616 + 656100 = 1204^2 + 810^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263211 + ... + 263218.

2^2105716 is an apocalyptic number.

It is an amenable number.

2105716 is a deficient number, since it is larger than the sum of its proper divisors (1579294).

2105716 is a wasteful number, since it uses less digits than its factorization.

2105716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526433 (or 526431 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2105716 is about 1451.1085417707. The cubic root of 2105716 is about 128.1739983920.

The spelling of 2105716 in words is "two million, one hundred five thousand, seven hundred sixteen".