2213660420 has 24 divisors (see below), whose sum is σ = 4774328664. Its totient is φ = 861532416.

The previous prime is 2213660363. The next prime is 2213660429. The reversal of 2213660420 is 240663122.

It can be written as a sum of positive squares in 4 ways, for example, as 634233856 + 1579426564 = 25184^2 + 39742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2213660420.

It is not an unprimeable number, because it can be changed into a prime (2213660429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494977 + ... + 1496456.

It is an arithmetic number, because the mean of its divisors is an integer number (198930361).

Almost surely, 2^2213660420 is an apocalyptic number.

2213660420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213660420 is an abundant number, since it is smaller than the sum of its proper divisors (2560668244).

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

2213660420 is a wasteful number, since it uses less digits than its factorization.

2213660420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991479 (or 2991477 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2213660420 is about 47049.5528140279. The cubic root of 2213660420 is about 1303.2778073179.

The spelling of 2213660420 in words is "two billion, two hundred thirteen million, six hundred sixty thousand, four hundred twenty".