6423405 has 8 divisors (see below), whose sum is σ = 10277472. Its totient is φ = 3425808.

The previous prime is 6423401. The next prime is 6423407. The reversal of 6423405 is 5043246.

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

It is not a de Polignac number, because 6423405 - 2² = 6423401 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6423401) 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, 214099 + ... + 214128.

It is an arithmetic number, because the mean of its divisors is an integer number (1284684).

Almost surely, 2^6423405 is an apocalyptic number.

It is an amenable number.

6423405 is a deficient number, since it is larger than the sum of its proper divisors (3854067).

6423405 is a wasteful number, since it uses less digits than its factorization.

6423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428235.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 6423405 is about 2534.4437259486. The cubic root of 6423405 is about 185.8896038157.

The spelling of 6423405 in words is "six million, four hundred twenty-three thousand, four hundred five".