2100069 has 6 divisors (see below), whose sum is σ = 3033446. Its totient is φ = 1400040.

The previous prime is 2100053. The next prime is 2100071. The reversal of 2100069 is 9600012.

It can be written as a sum of positive squares in only one way, i.e., 1855044 + 245025 = 1362^2 + 495^2 .

It is not a de Polignac number, because 2100069 - 2⁴ = 2100053 is a prime.

It is a super-2 number, since 2×2100069² = 8820579609522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116662 + ... + 116679.

2^2100069 is an apocalyptic number.

It is an amenable number.

2100069 is a deficient number, since it is larger than the sum of its proper divisors (933377).

2100069 is a wasteful number, since it uses less digits than its factorization.

2100069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233347 (or 233344 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2100069 is about 1449.1614816852. The cubic root of 2100069 is about 128.0593190225.

The spelling of 2100069 in words is "two million, one hundred thousand, sixty-nine".