2070081 has 18 divisors (see below), whose sum is σ = 3240198. Its totient is φ = 1272960.

The previous prime is 2070071. The next prime is 2070083. The reversal of 2070081 is 1800702.

It can be written as a sum of positive squares in 3 ways, for example, as 65025 + 2005056 = 255^2 + 1416^2 .

It is not a de Polignac number, because 2070081 - 2⁷ = 2069953 is a prime.

It is a super-3 number, since 3×2070081³ = 26612352814333024323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2070083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 841 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (180011).

2^2070081 is an apocalyptic number.

It is an amenable number.

2070081 is a deficient number, since it is larger than the sum of its proper divisors (1170117).

2070081 is a wasteful number, since it uses less digits than its factorization.

2070081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 2070081 is about 1438.7776061643. Note that the first 3 decimals coincide. The cubic root of 2070081 is about 127.4468521277.

Adding to 2070081 its reverse (1800702), we get a palindrome (3870783).

The spelling of 2070081 in words is "two million, seventy thousand, eighty-one".