2220640650 has 96 divisors (see below), whose sum is σ = 6175646400. Its totient is φ = 586699200.

The previous prime is 2220640649. The next prime is 2220640651. The reversal of 2220640650 is 560460222.

2220640650 is a `hidden beast` number, since 2 + 2 + 2 + 0 + 6 + 4 + 0 + 650 = 666.

It is an interprime number because it is at equal distance from previous prime (2220640649) and next prime (2220640651).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2220640651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139605 + ... + 154695.

It is an arithmetic number, because the mean of its divisors is an integer number (64329650).

Almost surely, 2^2220640650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2220640650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087823200).

2220640650 is an abundant number, since it is smaller than the sum of its proper divisors (3955005750).

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

2220640650 is a wasteful number, since it uses less digits than its factorization.

2220640650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15221 (or 15210 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2220640650 is about 47123.6739866492. The cubic root of 2220640650 is about 1304.6462246208.

The spelling of 2220640650 in words is "two billion, two hundred twenty million, six hundred forty thousand, six hundred fifty".