2668538 has 8 divisors (see below), whose sum is σ = 4039860. Its totient is φ = 1321920.

The previous prime is 2668469. The next prime is 2668553. The reversal of 2668538 is 8358662.

It can be written as a sum of positive squares in 2 ways, for example, as 2666689 + 1849 = 1633^2 + 43^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5903 + ... + 6338.

2^2668538 is an apocalyptic number.

2668538 is a deficient number, since it is larger than the sum of its proper divisors (1371322).

2668538 is a wasteful number, since it uses less digits than its factorization.

2668538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352.

The product of its digits is 69120, while the sum is 38.

The square root of 2668538 is about 1633.5660378448. The cubic root of 2668538 is about 138.7046850370.

The spelling of 2668538 in words is "two million, six hundred sixty-eight thousand, five hundred thirty-eight".