2668738 has 4 divisors (see below), whose sum is σ = 4003110. Its totient is φ = 1334368.

The previous prime is 2668733. The next prime is 2668769. The reversal of 2668738 is 8378662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2647129 + 21609 = 1627^2 + 147^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2668738.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667183 + ... + 667186.

2^2668738 is an apocalyptic number.

2668738 is a deficient number, since it is larger than the sum of its proper divisors (1334372).

2668738 is a wasteful number, since it uses less digits than its factorization.

2668738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334371.

The product of its digits is 96768, while the sum is 40.

The square root of 2668738 is about 1633.6272524661. The cubic root of 2668738 is about 138.7081501358.

The spelling of 2668738 in words is "two million, six hundred sixty-eight thousand, seven hundred thirty-eight".