2201616 has 30 divisors (see below), whose sum is σ = 6161870. Its totient is φ = 733824.

The previous prime is 2201603. The next prime is 2201623. The reversal of 2201616 is 6161022.

It is a happy number.

2201616 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1971216 + 230400 = 1404^2 + 480^2 .

It is a super-2 number, since 2×2201616² = 9694226022912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7501 + ... + 7788.

2^2201616 is an apocalyptic number.

It is an amenable number.

2201616 is an abundant number, since it is smaller than the sum of its proper divisors (3960254).

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

2201616 is a wasteful number, since it uses less digits than its factorization.

2201616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303 (or 15294 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2201616 is about 1483.7843509082. The cubic root of 2201616 is about 130.0909816757.

Adding to 2201616 its reverse (6161022), we get a palindrome (8362638).

The spelling of 2201616 in words is "two million, two hundred one thousand, six hundred sixteen".