2219661 has 12 divisors (see below), whose sum is σ = 3345888. Its totient is φ = 1415304.

The previous prime is 2219647. The next prime is 2219671. The reversal of 2219661 is 1669122.

It is not a de Polignac number, because 2219661 - 2⁵ = 2219629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5155 + ... + 5568.

It is an arithmetic number, because the mean of its divisors is an integer number (278824).

2^2219661 is an apocalyptic number.

It is an amenable number.

2219661 is a deficient number, since it is larger than the sum of its proper divisors (1126227).

2219661 is a wasteful number, since it uses less digits than its factorization.

2219661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10752 (or 10749 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2219661 is about 1489.8526772805. The cubic root of 2219661 is about 130.4454345359.

It can be divided in two parts, 22 and 19661, that added together give a 9-th power (19683 = 3⁹).

The spelling of 2219661 in words is "two million, two hundred nineteen thousand, six hundred sixty-one".