2666405164 has 12 divisors (see below), whose sum is σ = 4735854424. Its totient is φ = 1313303904.

The previous prime is 2666405141. The next prime is 2666405177. The reversal of 2666405164 is 4615046662.

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, 4974369 + ... + 4974904.

Almost surely, 2^2666405164 is an apocalyptic number.

It is an amenable number.

2666405164 is a deficient number, since it is larger than the sum of its proper divisors (2069449260).

2666405164 is a wasteful number, since it uses less digits than its factorization.

2666405164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9949344 (or 9949342 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2666405164 is about 51637.2458986728. The cubic root of 2666405164 is about 1386.6772182639.

The spelling of 2666405164 in words is "two billion, six hundred sixty-six million, four hundred five thousand, one hundred sixty-four".