6623811 has 6 divisors (see below), whose sum is σ = 9567740. Its totient is φ = 4415868.

The previous prime is 6623809. The next prime is 6623819. The reversal of 6623811 is 1183266.

It is not a de Polignac number, because 6623811 - 2¹ = 6623809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6623819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367981 + ... + 367998.

Almost surely, 2^6623811 is an apocalyptic number.

6623811 is a deficient number, since it is larger than the sum of its proper divisors (2943929).

6623811 is a wasteful number, since it uses less digits than its factorization.

6623811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735985 (or 735982 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 6623811 is about 2573.6765531045. The cubic root of 6623811 is about 187.8030512558.

The spelling of 6623811 in words is "six million, six hundred twenty-three thousand, eight hundred eleven".