2233861 has 6 divisors (see below), whose sum is σ = 2598630. Its totient is φ = 1914696.

The previous prime is 2233859. The next prime is 2233867. The reversal of 2233861 is 1683322.

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 592900 = 1281^2 + 770^2 .

It is not a de Polignac number, because 2233861 - 2¹ = 2233859 is a prime.

It is a Duffinian number.

2233861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2233867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22746 + ... + 22843.

It is an arithmetic number, because the mean of its divisors is an integer number (433105).

2^2233861 is an apocalyptic number.

It is an amenable number.

2233861 is a deficient number, since it is larger than the sum of its proper divisors (364769).

2233861 is an equidigital number, since it uses as much as digits as its factorization.

2233861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45603 (or 45596 counting only the distinct ones).

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

The square root of 2233861 is about 1494.6106516414. The cubic root of 2233861 is about 130.7230128304.

The spelling of 2233861 in words is "two million, two hundred thirty-three thousand, eight hundred sixty-one".