6623449 has 4 divisors (see below), whose sum is σ = 7569664. Its totient is φ = 5677236.

The previous prime is 6623423. The next prime is 6623459. The reversal of 6623449 is 9443266.

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 6623449 - 2⁵ = 6623417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6623459) 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, 473097 + ... + 473110.

It is an arithmetic number, because the mean of its divisors is an integer number (1892416).

Almost surely, 2^6623449 is an apocalyptic number.

It is an amenable number.

6623449 is a deficient number, since it is larger than the sum of its proper divisors (946215).

6623449 is an equidigital number, since it uses as much as digits as its factorization.

6623449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946214.

The product of its digits is 31104, while the sum is 34.

The square root of 6623449 is about 2573.6062247360. The cubic root of 6623449 is about 187.7996299654.

The spelling of 6623449 in words is "six million, six hundred twenty-three thousand, four hundred forty-nine".