6423555 has 32 divisors (see below), whose sum is σ = 10999296. Its totient is φ = 3193344.

The previous prime is 6423553. The next prime is 6423559. The reversal of 6423555 is 5553246.

It is not a de Polignac number, because 6423555 - 2¹ = 6423553 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6423551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14619 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (343728).

Almost surely, 2^6423555 is an apocalyptic number.

6423555 is a deficient number, since it is larger than the sum of its proper divisors (4575741).

6423555 is a wasteful number, since it uses less digits than its factorization.

6423555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 18000, while the sum is 30.

The square root of 6423555 is about 2534.4733180683. The cubic root of 6423555 is about 185.8910507753.

The spelling of 6423555 in words is "six million, four hundred twenty-three thousand, five hundred fifty-five".