2105677 has 10 divisors (see below), whose sum is σ = 2459278. Its totient is φ = 1802808.

The previous prime is 2105669. The next prime is 2105681. The reversal of 2105677 is 7765012.

It can be written as a sum of positive squares in only one way, i.e., 2019241 + 86436 = 1421^2 + 294^2 .

It is not a de Polignac number, because 2105677 - 2³ = 2105669 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105377) 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 in 9 ways as a sum of consecutive naturals, for example, 1963 + ... + 2839.

2^2105677 is an apocalyptic number.

It is an amenable number.

2105677 is a deficient number, since it is larger than the sum of its proper divisors (353601).

2105677 is an frugal number, since it uses more digits than its factorization.

2105677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 2105677 is about 1451.0951037062. The cubic root of 2105677 is about 128.1732070829.

The spelling of 2105677 in words is "two million, one hundred five thousand, six hundred seventy-seven".