2105654 has 12 divisors (see below), whose sum is σ = 3356124. Its totient is φ = 990624.

The previous prime is 2105641. The next prime is 2105669. The reversal of 2105654 is 4565012.

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

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 in 5 ways as a sum of consecutive naturals, for example, 1244 + ... + 2399.

It is an arithmetic number, because the mean of its divisors is an integer number (279677).

2^2105654 is an apocalyptic number.

2105654 is a deficient number, since it is larger than the sum of its proper divisors (1250470).

2105654 is a wasteful number, since it uses less digits than its factorization.

2105654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2105654 is about 1451.0871786354. The cubic root of 2105654 is about 128.1727404088.

The spelling of 2105654 in words is "two million, one hundred five thousand, six hundred fifty-four".