6815423 has 4 divisors (see below), whose sum is σ = 6960480. Its totient is φ = 6670368.

The previous prime is 6815399. The next prime is 6815447. The reversal of 6815423 is 3245186.

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

It is an interprime number because it is at equal distance from previous prime (6815399) and next prime (6815447).

It is a cyclic number.

It is not a de Polignac number, because 6815423 - 2¹² = 6811327 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 (6815723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72458 + ... + 72551.

It is an arithmetic number, because the mean of its divisors is an integer number (1740120).

Almost surely, 2^6815423 is an apocalyptic number.

6815423 is a deficient number, since it is larger than the sum of its proper divisors (145057).

6815423 is a wasteful number, since it uses less digits than its factorization.

6815423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145056.

The product of its digits is 5760, while the sum is 29.

The square root of 6815423 is about 2610.6365124237. The cubic root of 6815423 is about 189.5967718150.

The spelling of 6815423 in words is "six million, eight hundred fifteen thousand, four hundred twenty-three".