2620643216 has 10 divisors (see below), whose sum is σ = 5077496262. Its totient is φ = 1310321600.

The previous prime is 2620643197. The next prime is 2620643237. The reversal of 2620643216 is 6123460262.

2620643216 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 only one way, i.e., 2358073600 + 262569616 = 48560^2 + 16204^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81895085 + ... + 81895116.

Almost surely, 2^2620643216 is an apocalyptic number.

It is an amenable number.

2620643216 is a deficient number, since it is larger than the sum of its proper divisors (2456853046).

2620643216 is a wasteful number, since it uses less digits than its factorization.

2620643216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163790209 (or 163790203 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2620643216 is about 51192.2183148963. The cubic root of 2620643216 is about 1378.6984886451.

The spelling of 2620643216 in words is "two billion, six hundred twenty million, six hundred forty-three thousand, two hundred sixteen".