2240643 has 8 divisors (see below), whose sum is σ = 3038400. Its totient is φ = 1468328.

The previous prime is 2240633. The next prime is 2240647. The reversal of 2240643 is 3460422.

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

It is a cyclic number.

It is not a de Polignac number, because 2240643 - 2¹⁴ = 2224259 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2240647) 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 7 ways as a sum of consecutive naturals, for example, 6153 + ... + 6506.

It is an arithmetic number, because the mean of its divisors is an integer number (379800).

2^2240643 is an apocalyptic number.

2240643 is a deficient number, since it is larger than the sum of its proper divisors (797757).

2240643 is a wasteful number, since it uses less digits than its factorization.

2240643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12721.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2240643 is about 1496.8777505194. The cubic root of 2240643 is about 130.8551708267.

The spelling of 2240643 in words is "two million, two hundred forty thousand, six hundred forty-three".