2666804 has 48 divisors (see below), whose sum is σ = 5757696. Its totient is φ = 1056000.

The previous prime is 2666791. The next prime is 2666809. The reversal of 2666804 is 4086662.

It is a happy number.

It is a super-2 number, since 2×2666804² = 14223687148832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26354 + ... + 26454.

It is an arithmetic number, because the mean of its divisors is an integer number (119952).

2^2666804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2878848).

2666804 is an abundant number, since it is smaller than the sum of its proper divisors (3090892).

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

2666804 is a wasteful number, since it uses less digits than its factorization.

2666804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 2666804 is about 1633.0352108880. The cubic root of 2666804 is about 138.6746353696.

The spelling of 2666804 in words is "two million, six hundred sixty-six thousand, eight hundred four".