2478668 has 12 divisors (see below), whose sum is σ = 4592952. Its totient is φ = 1166400.

The previous prime is 2478661. The next prime is 2478673. The reversal of 2478668 is 8668742.

It is a super-2 number, since 2×2478668² = 12287590108448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2478661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18158 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (382746).

2^2478668 is an apocalyptic number.

It is an amenable number.

2478668 is a deficient number, since it is larger than the sum of its proper divisors (2114284).

2478668 is a wasteful number, since it uses less digits than its factorization.

2478668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36472 (or 36470 counting only the distinct ones).

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

The square root of 2478668 is about 1574.3786075782. The cubic root of 2478668 is about 135.3337512559. Note that the first 3 decimals are identical.

The spelling of 2478668 in words is "two million, four hundred seventy-eight thousand, six hundred sixty-eight".