2106263 has 4 divisors (see below), whose sum is σ = 2111688. Its totient is φ = 2100840.

The previous prime is 2106257. The next prime is 2106277. The reversal of 2106263 is 3626012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2106263 - 2⁶ = 2106199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106463) 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, 2081 + ... + 2922.

It is an arithmetic number, because the mean of its divisors is an integer number (527922).

2^2106263 is an apocalyptic number.

2106263 is a deficient number, since it is larger than the sum of its proper divisors (5425).

2106263 is an equidigital number, since it uses as much as digits as its factorization.

2106263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5424.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2106263 is about 1451.2970061293. The cubic root of 2106263 is about 128.1850959802.

It can be divided in two parts, 2106 and 263, that multiplied together give a triangular number (553878 = T₁₀₅₂).

The spelling of 2106263 in words is "two million, one hundred six thousand, two hundred sixty-three".