2100688 has 10 divisors (see below), whose sum is σ = 4070114. Its totient is φ = 1050336.

The previous prime is 2100661. The next prime is 2100691. The reversal of 2100688 is 8860012.

It can be written as a sum of positive squares in only one way, i.e., 2039184 + 61504 = 1428^2 + 248^2 .

It is a congruent number.

It is an unprimeable number.

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, 65631 + ... + 65662.

2^2100688 is an apocalyptic number.

It is an amenable number.

2100688 is a deficient number, since it is larger than the sum of its proper divisors (1969426).

2100688 is a wasteful number, since it uses less digits than its factorization.

2100688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131301 (or 131295 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 2100688 is about 1449.3750377318. The cubic root of 2100688 is about 128.0718997094.

The spelling of 2100688 in words is "two million, one hundred thousand, six hundred eighty-eight".