2229681 has 8 divisors (see below), whose sum is σ = 2981440. Its totient is φ = 1482192.

The previous prime is 2229673. The next prime is 2229683. The reversal of 2229681 is 1869222.

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

It is not a de Polignac number, because 2229681 - 2³ = 2229673 is a prime.

It is a super-2 number, since 2×2229681² = 9942954723522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2229683) 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, 471 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (372680).

2^2229681 is an apocalyptic number.

It is an amenable number.

2229681 is a deficient number, since it is larger than the sum of its proper divisors (751759).

2229681 is a wasteful number, since it uses less digits than its factorization.

2229681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its digits is 3456, while the sum is 30.

The square root of 2229681 is about 1493.2116393867. The cubic root of 2229681 is about 130.6414256338.

The spelling of 2229681 in words is "two million, two hundred twenty-nine thousand, six hundred eighty-one".