2665404164 has 12 divisors (see below), whose sum is σ = 4664825088. Its totient is φ = 1332597000.

The previous prime is 2665404127. The next prime is 2665404281. The reversal of 2665404164 is 4614045662.

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, 69989 + ... + 101139.

It is an arithmetic number, because the mean of its divisors is an integer number (388735424).

Almost surely, 2^2665404164 is an apocalyptic number.

It is an amenable number.

2665404164 is a deficient number, since it is larger than the sum of its proper divisors (1999420924).

2665404164 is a wasteful number, since it uses less digits than its factorization.

2665404164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52546 (or 52544 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 2665404164 is about 51627.5523727399. The cubic root of 2665404164 is about 1386.5036715416.

The spelling of 2665404164 in words is "two billion, six hundred sixty-five million, four hundred four thousand, one hundred sixty-four".