2221767560 has 64 divisors (see below), whose sum is σ = 5076000000. Its totient is φ = 875077632.

The previous prime is 2221767533. The next prime is 2221767563. The reversal of 2221767560 is 657671222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2221767563) 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, 1576136 + ... + 1577544.

It is an arithmetic number, because the mean of its divisors is an integer number (79312500).

Almost surely, 2^2221767560 is an apocalyptic number.

2221767560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221767560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538000000).

2221767560 is an abundant number, since it is smaller than the sum of its proper divisors (2854232440).

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

2221767560 is a wasteful number, since it uses less digits than its factorization.

2221767560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2221767560 is about 47135.6294113063. The cubic root of 2221767560 is about 1304.8668771983.

The spelling of 2221767560 in words is "two billion, two hundred twenty-one million, seven hundred sixty-seven thousand, five hundred sixty".