2233681 has 12 divisors (see below), whose sum is σ = 2431440. Its totient is φ = 2050880.

The previous prime is 2233657. The next prime is 2233709. The reversal of 2233681 is 1863322.

It is a de Polignac number, because none of the positive numbers 2^k-2233681 is a prime.

It is a super-2 number, since 2×2233681² = 9978661619522, which contains 22 as substring.

It is a Duffinian number.

2233681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2233601) 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, 16986 + ... + 17116.

It is an arithmetic number, because the mean of its divisors is an integer number (202620).

2^2233681 is an apocalyptic number.

It is an amenable number.

2233681 is a deficient number, since it is larger than the sum of its proper divisors (197759).

2233681 is a wasteful number, since it uses less digits than its factorization.

2233681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 207 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 2233681 is about 1494.5504340771. The cubic root of 2233681 is about 130.7195016041.

The spelling of 2233681 in words is "two million, two hundred thirty-three thousand, six hundred eighty-one".