2666415884 has 24 divisors (see below), whose sum is σ = 5166412608. Its totient is φ = 1193916240.

The previous prime is 2666415877. The next prime is 2666415889. The reversal of 2666415884 is 4885146662.

It is not an unprimeable number, because it can be changed into a prime (2666415889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449294 + ... + 455189.

It is an arithmetic number, because the mean of its divisors is an integer number (215267192).

Almost surely, 2^2666415884 is an apocalyptic number.

It is an amenable number.

2666415884 is a deficient number, since it is larger than the sum of its proper divisors (2499996724).

2666415884 is a wasteful number, since it uses less digits than its factorization.

2666415884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904565 (or 904563 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 50.

The square root of 2666415884 is about 51637.3496996118. The cubic root of 2666415884 is about 1386.6790765911.

The spelling of 2666415884 in words is "two billion, six hundred sixty-six million, four hundred fifteen thousand, eight hundred eighty-four".