2666478 has 16 divisors (see below), whose sum is σ = 5349456. Its totient is φ = 886080.

The previous prime is 2666453. The next prime is 2666491. The reversal of 2666478 is 8746662.

It is a super-2 number, since 2×2666478² = 14220209848968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (334341).

2^2666478 is an apocalyptic number.

2666478 is an abundant number, since it is smaller than the sum of its proper divisors (2682978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666478 is a wasteful number, since it uses less digits than its factorization.

2666478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 96768, while the sum is 39.

The square root of 2666478 is about 1632.9353937006. The cubic root of 2666478 is about 138.6689844390.

The spelling of 2666478 in words is "two million, six hundred sixty-six thousand, four hundred seventy-eight".