423642667 has 8 divisors (see below), whose sum is σ = 484292576. Its totient is φ = 363025152.

The previous prime is 423642649. The next prime is 423642719. The reversal of 423642667 is 766246324.

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

It is not a de Polignac number, because 423642667 - 2⁷ = 423642539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423442667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35833 + ... + 46165.

It is an arithmetic number, because the mean of its divisors is an integer number (60536572).

Almost surely, 2^423642667 is an apocalyptic number.

423642667 is a deficient number, since it is larger than the sum of its proper divisors (60649909).

423642667 is a wasteful number, since it uses less digits than its factorization.

423642667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16197.

The product of its digits is 290304, while the sum is 40.

The square root of 423642667 is about 20582.5816407952. The cubic root of 423642667 is about 751.0460467404.

The spelling of 423642667 in words is "four hundred twenty-three million, six hundred forty-two thousand, six hundred sixty-seven".