2105616 has 20 divisors (see below), whose sum is σ = 5439632. Its totient is φ = 701856.

The previous prime is 2105611. The next prime is 2105641. The reversal of 2105616 is 6165012.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2105592 and 2105601.

It is not an unprimeable number, because it can be changed into a prime (2105611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21886 + ... + 21981.

2^2105616 is an apocalyptic number.

It is an amenable number.

2105616 is an abundant number, since it is smaller than the sum of its proper divisors (3334016).

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

2105616 is a wasteful number, since it uses less digits than its factorization.

2105616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43878 (or 43872 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2105616 is about 1451.0740849454. The cubic root of 2105616 is about 128.1719693747.

The spelling of 2105616 in words is "two million, one hundred five thousand, six hundred sixteen".