2220664620 has 24 divisors (see below), whose sum is σ = 6217861104. Its totient is φ = 592177216.

The previous prime is 2220664619. The next prime is 2220664643. The reversal of 2220664620 is 264660222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18505479 + ... + 18505598.

It is an arithmetic number, because the mean of its divisors is an integer number (259077546).

Almost surely, 2^2220664620 is an apocalyptic number.

2220664620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220664620 is an abundant number, since it is smaller than the sum of its proper divisors (3997196484).

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

2220664620 is a wasteful number, since it uses less digits than its factorization.

2220664620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37011089 (or 37011087 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2220664620 is about 47123.9283167267. The cubic root of 2220664620 is about 1304.6509188003.

The spelling of 2220664620 in words is "two billion, two hundred twenty million, six hundred sixty-four thousand, six hundred twenty".