2639287876 has 27 divisors (see below), whose sum is σ = 4909676317. Its totient is φ = 1241195840.

The previous prime is 2639287829. The next prime is 2639287897. The reversal of 2639287876 is 6787829362.

The square root of 2639287876 is 51374.

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., 2054808900 + 584478976 = 45330^2 + 24176^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2639287876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1745961 + ... + 1747471.

Almost surely, 2^2639287876 is an apocalyptic number.

2639287876 is the 51374-th square number.

It is an amenable number.

2639287876 is a deficient number, since it is larger than the sum of its proper divisors (2270388441).

2639287876 is an equidigital number, since it uses as much as digits as its factorization.

2639287876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060 (or 1530 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The cubic root of 2639287876 is about 1381.9603651746.

The spelling of 2639287876 in words is "two billion, six hundred thirty-nine million, two hundred eighty-seven thousand, eight hundred seventy-six".