2668493 has 12 divisors (see below), whose sum is σ = 2926560. Its totient is φ = 2426256.

The previous prime is 2668469. The next prime is 2668553. The reversal of 2668493 is 3948662.

It is not a de Polignac number, because 2668493 - 2¹² = 2664397 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15896 + ... + 16062.

It is an arithmetic number, because the mean of its divisors is an integer number (243880).

2^2668493 is an apocalyptic number.

It is an amenable number.

2668493 is a deficient number, since it is larger than the sum of its proper divisors (258067).

2668493 is a wasteful number, since it uses less digits than its factorization.

2668493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 215 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 2668493 is about 1633.5522642389. The cubic root of 2668493 is about 138.7039053659.

The spelling of 2668493 in words is "two million, six hundred sixty-eight thousand, four hundred ninety-three".