2206578648 has 64 divisors (see below), whose sum is σ = 5865441120. Its totient is φ = 689356800.

The previous prime is 2206578641. The next prime is 2206578659. The reversal of 2206578648 is 8468756022.

2206578648 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2206578597 and 2206578606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206578641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87108 + ... + 109548.

Almost surely, 2^2206578648 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 2206578648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2932720560).

2206578648 is an abundant number, since it is smaller than the sum of its proper divisors (3658862472).

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

2206578648 is a wasteful number, since it uses less digits than its factorization.

2206578648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22708 (or 22704 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 2206578648 is about 46974.2338734758. The cubic root of 2206578648 is about 1301.8865406404.

The spelling of 2206578648 in words is "two billion, two hundred six million, five hundred seventy-eight thousand, six hundred forty-eight".