2668478 has 4 divisors (see below), whose sum is σ = 4002720. Its totient is φ = 1334238.

The previous prime is 2668469. The next prime is 2668553. The reversal of 2668478 is 8748662.

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

It is a super-3 number, since 3×2668478³ = 57004892982333454056, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667118 + ... + 667121.

It is an arithmetic number, because the mean of its divisors is an integer number (1000680).

2^2668478 is an apocalyptic number.

2668478 is a deficient number, since it is larger than the sum of its proper divisors (1334242).

2668478 is a wasteful number, since it uses less digits than its factorization.

2668478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334241.

The product of its digits is 129024, while the sum is 41.

The square root of 2668478 is about 1633.5476730111. The cubic root of 2668478 is about 138.7036454736.

It can be divided in two parts, 26684 and 78, that added together give a palindrome (26762).

The spelling of 2668478 in words is "two million, six hundred sixty-eight thousand, four hundred seventy-eight".