2336721 has 4 divisors (see below), whose sum is σ = 3115632. Its totient is φ = 1557812.

The previous prime is 2336707. The next prime is 2336743. The reversal of 2336721 is 1276332.

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 cyclic number.

It is not a de Polignac number, because 2336721 - 2⁹ = 2336209 is a prime.

It is a D-number.

It is a Curzon number.

2336721 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2336691 and 2336700.

It is not an unprimeable number, because it can be changed into a prime (2336771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389451 + ... + 389456.

It is an arithmetic number, because the mean of its divisors is an integer number (778908).

2^2336721 is an apocalyptic number.

It is an amenable number.

2336721 is a deficient number, since it is larger than the sum of its proper divisors (778911).

2336721 is an equidigital number, since it uses as much as digits as its factorization.

2336721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778910.

The product of its digits is 1512, while the sum is 24.

The square root of 2336721 is about 1528.6337036714. The cubic root of 2336721 is about 132.6993983641.

The spelling of 2336721 in words is "two million, three hundred thirty-six thousand, seven hundred twenty-one".