2007945 has 12 divisors (see below), whose sum is σ = 3480516. Its totient is φ = 1070880.

The previous prime is 2007919. The next prime is 2007949. The reversal of 2007945 is 5497002.

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 480249 = 1236^2 + 693^2 .

It is not a de Polignac number, because 2007945 - 2⁵ = 2007913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2007949) 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 11 ways as a sum of consecutive naturals, for example, 22266 + ... + 22355.

It is an arithmetic number, because the mean of its divisors is an integer number (290043).

2^2007945 is an apocalyptic number.

It is an amenable number.

2007945 is a deficient number, since it is larger than the sum of its proper divisors (1472571).

2007945 is a wasteful number, since it uses less digits than its factorization.

2007945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44632 (or 44629 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2007945 is about 1417.0197599187. The cubic root of 2007945 is about 126.1587191047.

The spelling of 2007945 in words is "two million, seven thousand, nine hundred forty-five".