2663421 has 8 divisors (see below), whose sum is σ = 3562560. Its totient is φ = 1769952.

The previous prime is 2663393. The next prime is 2663429. The reversal of 2663421 is 1243662.

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

It is not a de Polignac number, because 2663421 - 2⁶ = 2663357 is a prime.

It is a super-2 number, since 2×2663421² = 14187622846482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2663391 and 2663400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663429) 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 7 ways as a sum of consecutive naturals, for example, 160 + ... + 2313.

It is an arithmetic number, because the mean of its divisors is an integer number (445320).

2^2663421 is an apocalyptic number.

It is an amenable number.

2663421 is a deficient number, since it is larger than the sum of its proper divisors (899139).

2663421 is a wasteful number, since it uses less digits than its factorization.

2663421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835.

The product of its digits is 1728, while the sum is 24.

The square root of 2663421 is about 1631.9990808821. Note that the first 3 decimals coincide. The cubic root of 2663421 is about 138.6159715399.

The spelling of 2663421 in words is "two million, six hundred sixty-three thousand, four hundred twenty-one".