664423357254 has 8 divisors (see below), whose sum is σ = 1328846714520. Its totient is φ = 221474452416.

The previous prime is 664423357253. The next prime is 664423357289. The reversal of 664423357254 is 452753324466.

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

664423357254 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 664423357197 and 664423357206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664423357253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55368613099 + ... + 55368613110.

It is an arithmetic number, because the mean of its divisors is an integer number (166105839315).

Almost surely, 2^664423357254 is an apocalyptic number.

664423357254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664423357254 is a wasteful number, since it uses less digits than its factorization.

664423357254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110737226214.

The product of its digits is 14515200, while the sum is 51.

The spelling of 664423357254 in words is "six hundred sixty-four billion, four hundred twenty-three million, three hundred fifty-seven thousand, two hundred fifty-four".