6623831 has 4 divisors (see below), whose sum is σ = 6664632. Its totient is φ = 6583032.

The previous prime is 6623819. The next prime is 6623833. The reversal of 6623831 is 1383266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6623831 - 2²² = 2429527 is a prime.

It is a super-2 number, since 2×6623831² = 87750274233122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6623794 and 6623803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6623833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20156 + ... + 20481.

It is an arithmetic number, because the mean of its divisors is an integer number (1666158).

Almost surely, 2^6623831 is an apocalyptic number.

6623831 is a deficient number, since it is larger than the sum of its proper divisors (40801).

6623831 is a wasteful number, since it uses less digits than its factorization.

6623831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40800.

The product of its digits is 5184, while the sum is 29.

The square root of 6623831 is about 2573.6804385937. The cubic root of 6623831 is about 187.8032402737.

The spelling of 6623831 in words is "six million, six hundred twenty-three thousand, eight hundred thirty-one".