6423005 has 4 divisors (see below), whose sum is σ = 7707612. Its totient is φ = 5138400.

The previous prime is 6422993. The next prime is 6423013. The reversal of 6423005 is 5003246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5003246 = 2 ⋅2501623.

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 4214809 = 1486^2 + 2053^2 .

It is not a de Polignac number, because 6423005 - 2⁴ = 6422989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642296 + ... + 642305.

It is an arithmetic number, because the mean of its divisors is an integer number (1926903).

Almost surely, 2^6423005 is an apocalyptic number.

It is an amenable number.

6423005 is a deficient number, since it is larger than the sum of its proper divisors (1284607).

6423005 is a wasteful number, since it uses less digits than its factorization.

6423005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284606.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6423005 is about 2534.3648119401. The cubic root of 6423005 is about 185.8857451465.

The spelling of 6423005 in words is "six million, four hundred twenty-three thousand, five".