2665923 has 16 divisors (see below), whose sum is σ = 4054176. Its totient is φ = 1543680.

The previous prime is 2665913. The next prime is 2665931. The reversal of 2665923 is 3295662.

2665923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2665923 - 2⁵ = 2665891 is a prime.

2665923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2665913) 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 15 ways as a sum of consecutive naturals, for example, 1348 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (253386).

2^2665923 is an apocalyptic number.

2665923 is a deficient number, since it is larger than the sum of its proper divisors (1388253).

2665923 is a wasteful number, since it uses less digits than its factorization.

2665923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054.

The product of its digits is 19440, while the sum is 33.

The square root of 2665923 is about 1632.7654454942. The cubic root of 2665923 is about 138.6593629299.

The spelling of 2665923 in words is "two million, six hundred sixty-five thousand, nine hundred twenty-three".