6423665 has 8 divisors (see below), whose sum is σ = 7957248. Its totient is φ = 4973040.

The previous prime is 6423661. The next prime is 6423673. The reversal of 6423665 is 5663246.

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

It is not a de Polignac number, because 6423665 - 2² = 6423661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6423661) 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, 20567 + ... + 20876.

It is an arithmetic number, because the mean of its divisors is an integer number (994656).

Almost surely, 2^6423665 is an apocalyptic number.

It is an amenable number.

6423665 is a deficient number, since it is larger than the sum of its proper divisors (1533583).

6423665 is a wasteful number, since it uses less digits than its factorization.

6423665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41479.

The product of its digits is 25920, while the sum is 32.

The square root of 6423665 is about 2534.4950187365. The cubic root of 6423665 is about 185.8921118648.

The spelling of 6423665 in words is "six million, four hundred twenty-three thousand, six hundred sixty-five".