2666666404 has 12 divisors (see below), whose sum is σ = 4780487628. Its totient is φ = 1300812800.

The previous prime is 2666666357. The next prime is 2666666411. The reversal of 2666666404 is 4046666662.

2666666404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1466736804 + 1199929600 = 38298^2 + 34640^2 .

It is a super-2 number, since 2×2666666404² = 14222219420444582432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8129917 + ... + 8130244.

It is an arithmetic number, because the mean of its divisors is an integer number (398373969).

Almost surely, 2^2666666404 is an apocalyptic number.

It is an amenable number.

2666666404 is a deficient number, since it is larger than the sum of its proper divisors (2113821224).

2666666404 is a wasteful number, since it uses less digits than its factorization.

2666666404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16260206 (or 16260204 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The square root of 2666666404 is about 51639.7754061731. The cubic root of 2666666404 is about 1386.7225031705.

The spelling of 2666666404 in words is "two billion, six hundred sixty-six million, six hundred sixty-six thousand, four hundred four".