2666520304 has 160 divisors (see below), whose sum is σ = 6411018240. Its totient is φ = 1049932800.

The previous prime is 2666520289. The next prime is 2666520317. The reversal of 2666520304 is 4030256662.

It is a super-2 number, since 2×2666520304² = 14220661063288504832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666520304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7148662 + ... + 7149034.

It is an arithmetic number, because the mean of its divisors is an integer number (40068864).

Almost surely, 2^2666520304 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 2666520304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3205509120).

2666520304 is an abundant number, since it is smaller than the sum of its proper divisors (3744497936).

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

2666520304 is a wasteful number, since it uses less digits than its factorization.

2666520304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 2666520304 is about 51638.3607795600. The cubic root of 2666520304 is about 1386.6971776858.

Adding to 2666520304 its reverse (4030256662), we get a palindrome (6696776966).

The spelling of 2666520304 in words is "two billion, six hundred sixty-six million, five hundred twenty thousand, three hundred four".