2221610 has 8 divisors (see below), whose sum is σ = 3998916. Its totient is φ = 888640.

The previous prime is 2221589. The next prime is 2221631. The reversal of 2221610 is 161222.

It is an interprime number because it is at equal distance from previous prime (2221589) and next prime (2221631).

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 4489 = 1489^2 + 67^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111071 + ... + 111090.

2^2221610 is an apocalyptic number.

2221610 is a deficient number, since it is larger than the sum of its proper divisors (1777306).

2221610 is a wasteful number, since it uses less digits than its factorization.

2221610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222168.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2221610 is about 1490.5066252788. The cubic root of 2221610 is about 130.4836030934.

Adding to 2221610 its reverse (161222), we get a palindrome (2382832).

The spelling of 2221610 in words is "two million, two hundred twenty-one thousand, six hundred ten".