2421646 has 8 divisors (see below), whose sum is σ = 3639384. Its totient is φ = 1208520.

The previous prime is 2421641. The next prime is 2421649. The reversal of 2421646 is 6461242.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2421646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421641) 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, 876 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (454923).

2^2421646 is an apocalyptic number.

2421646 is a deficient number, since it is larger than the sum of its proper divisors (1217738).

2421646 is a wasteful number, since it uses less digits than its factorization.

2421646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306.

The product of its digits is 2304, while the sum is 25.

The square root of 2421646 is about 1556.1638731188. The cubic root of 2421646 is about 134.2879010832.

Adding to 2421646 its reverse (6461242), we get a palindrome (8882888).

The spelling of 2421646 in words is "two million, four hundred twenty-one thousand, six hundred forty-six".