6623849 has 4 divisors (see below), whose sum is σ = 6777936. Its totient is φ = 6469764.

The previous prime is 6623833. The next prime is 6623857. The reversal of 6623849 is 9483266.

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 6623849 - 2⁴ = 6623833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6623809) 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, 76979 + ... + 77064.

It is an arithmetic number, because the mean of its divisors is an integer number (1694484).

Almost surely, 2^6623849 is an apocalyptic number.

It is an amenable number.

6623849 is a deficient number, since it is larger than the sum of its proper divisors (154087).

6623849 is a wasteful number, since it uses less digits than its factorization.

6623849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154086.

The product of its digits is 62208, while the sum is 38.

The square root of 6623849 is about 2573.6839355290. The cubic root of 6623849 is about 187.8034103895.

The spelling of 6623849 in words is "six million, six hundred twenty-three thousand, eight hundred forty-nine".