2665863424 has 81 divisors (see below), whose sum is σ = 6203555841. Its totient is φ = 1140034560.

The previous prime is 2665863391. The next prime is 2665863433. The reversal of 2665863424 is 4243685662.

The square root of 2665863424 is 51632.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 854509824 + 1811353600 = 29232^2 + 42560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5782554 + ... + 5783014.

Almost surely, 2^2665863424 is an apocalyptic number.

2665863424 is the 51632-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665863424

2665863424 is an abundant number, since it is smaller than the sum of its proper divisors (3537692417).

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

2665863424 is an frugal number, since it uses more digits than its factorization.

2665863424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 470 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The cubic root of 2665863424 is about 1386.5833003793.

The spelling of 2665863424 in words is "two billion, six hundred sixty-five million, eight hundred sixty-three thousand, four hundred twenty-four".