2106855 has 12 divisors (see below), whose sum is σ = 3651960. Its totient is φ = 1123632.

The previous prime is 2106847. The next prime is 2106857. The reversal of 2106855 is 5586012.

It is not a de Polignac number, because 2106855 - 2³ = 2106847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23365 + ... + 23454.

It is an arithmetic number, because the mean of its divisors is an integer number (304330).

2^2106855 is an apocalyptic number.

2106855 is a deficient number, since it is larger than the sum of its proper divisors (1545105).

2106855 is a wasteful number, since it uses less digits than its factorization.

2106855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46830 (or 46827 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2106855 is about 1451.5009472956. The cubic root of 2106855 is about 128.1971043679.

The spelling of 2106855 in words is "two million, one hundred six thousand, eight hundred fifty-five".