6423545 has 4 divisors (see below), whose sum is σ = 7708260. Its totient is φ = 5138832.

The previous prime is 6423523. The next prime is 6423551. The reversal of 6423545 is 5453246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 4541161 = 1372^2 + 2131^2 .

It is a cyclic number.

It is not a de Polignac number, because 6423545 - 2⁶ = 6423481 is a prime.

It is an unprimeable number.

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, 642350 + ... + 642359.

It is an arithmetic number, because the mean of its divisors is an integer number (1927065).

Almost surely, 2^6423545 is an apocalyptic number.

It is an amenable number.

6423545 is a deficient number, since it is larger than the sum of its proper divisors (1284715).

6423545 is a wasteful number, since it uses less digits than its factorization.

6423545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284714.

The product of its digits is 14400, while the sum is 29.

The square root of 6423545 is about 2534.4713452710. The cubic root of 6423545 is about 185.8909543121.

Subtracting from 6423545 its reverse (5453246), we obtain a cube (970299 = 99³).

The spelling of 6423545 in words is "six million, four hundred twenty-three thousand, five hundred forty-five".