2639707216 has 20 divisors (see below), whose sum is σ = 5116345524. Its totient is φ = 1319360000.

The previous prime is 2639707163. The next prime is 2639707253. The reversal of 2639707216 is 6127079362.

2639707216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 633025600 + 2006681616 = 25160^2 + 44796^2 .

It is a congruent number.

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, 15366 + ... + 74266.

Almost surely, 2^2639707216 is an apocalyptic number.

It is an amenable number.

2639707216 is a deficient number, since it is larger than the sum of its proper divisors (2476638308).

2639707216 is a wasteful number, since it uses less digits than its factorization.

2639707216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61710 (or 61704 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 2639707216 is about 51378.0810852254. The cubic root of 2639707216 is about 1382.0335516549.

The spelling of 2639707216 in words is "two billion, six hundred thirty-nine million, seven hundred seven thousand, two hundred sixteen".