6820423 has 8 divisors (see below), whose sum is σ = 7091280. Its totient is φ = 6552000.

The previous prime is 6820421. The next prime is 6820433. The reversal of 6820423 is 3240286.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6820423 - 2¹ = 6820421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6811 + ... + 7747.

It is an arithmetic number, because the mean of its divisors is an integer number (886410).

Almost surely, 2^6820423 is an apocalyptic number.

6820423 is a deficient number, since it is larger than the sum of its proper divisors (270857).

6820423 is a wasteful number, since it uses less digits than its factorization.

6820423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 6820423 is about 2611.5939577201. The cubic root of 6820423 is about 189.6431251194.

The spelling of 6820423 in words is "six million, eight hundred twenty thousand, four hundred twenty-three".