2105693 has 2 divisors, whose sum is σ = 2105694. Its totient is φ = 2105692.

The previous prime is 2105681. The next prime is 2105699. The reversal of 2105693 is 3965012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1532644 + 573049 = 1238^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105693 - 2¹⁸ = 1843549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052846 + 1052847.

It is an arithmetic number, because the mean of its divisors is an integer number (1052847).

2^2105693 is an apocalyptic number.

It is an amenable number.

2105693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105693 is an equidigital number, since it uses as much as digits as its factorization.

2105693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2105693 is about 1451.1006167734. The cubic root of 2105693 is about 128.1735317237.

The spelling of 2105693 in words is "two million, one hundred five thousand, six hundred ninety-three".