2401643 has 4 divisors (see below), whose sum is σ = 2415240. Its totient is φ = 2388048.

The previous prime is 2401639. The next prime is 2401667. The reversal of 2401643 is 3461042.

It is a happy number.

2401643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2401643 - 2² = 2401639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2401603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6530 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (603810).

2^2401643 is an apocalyptic number.

2401643 is a deficient number, since it is larger than the sum of its proper divisors (13597).

2401643 is a wasteful number, since it uses less digits than its factorization.

2401643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13596.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2401643 is about 1549.7235237293. The cubic root of 2401643 is about 133.9171352233.

Adding to 2401643 its reverse (3461042), we get a palindrome (5862685).

The spelling of 2401643 in words is "two million, four hundred one thousand, six hundred forty-three".