2333681 has 4 divisors (see below), whose sum is σ = 2667072. Its totient is φ = 2000292.

The previous prime is 2333663. The next prime is 2333689. The reversal of 2333681 is 1863332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2333681 is a prime.

It is a super-2 number, since 2×2333681² = 10892134019522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2333681.

It is not an unprimeable number, because it can be changed into a prime (2333689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166685 + ... + 166698.

It is an arithmetic number, because the mean of its divisors is an integer number (666768).

2^2333681 is an apocalyptic number.

It is an amenable number.

2333681 is a deficient number, since it is larger than the sum of its proper divisors (333391).

2333681 is an equidigital number, since it uses as much as digits as its factorization.

2333681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333390.

The product of its digits is 2592, while the sum is 26.

The square root of 2333681 is about 1527.6390280429. The cubic root of 2333681 is about 132.6418274863.

The spelling of 2333681 in words is "two million, three hundred thirty-three thousand, six hundred eighty-one".