2216504660 has 48 divisors (see below), whose sum is σ = 5013624000. Its totient is φ = 820399104.

The previous prime is 2216504657. The next prime is 2216504663. The reversal of 2216504660 is 664056122.

It is an interprime number because it is at equal distance from previous prime (2216504657) and next prime (2216504663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216504663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51485 + ... + 84164.

It is an arithmetic number, because the mean of its divisors is an integer number (104450500).

Almost surely, 2^2216504660 is an apocalyptic number.

2216504660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216504660 is an abundant number, since it is smaller than the sum of its proper divisors (2797119340).

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

2216504660 is a wasteful number, since it uses less digits than its factorization.

2216504660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135720 (or 135718 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2216504660 is about 47079.7691158315. The cubic root of 2216504660 is about 1303.8357442059.

The spelling of 2216504660 in words is "two billion, two hundred sixteen million, five hundred four thousand, six hundred sixty".