664500048 has 20 divisors (see below), whose sum is σ = 1716625248. Its totient is φ = 221500000.

The previous prime is 664500041. The next prime is 664500049. The reversal of 664500048 is 840005466.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 664499991 and 664500018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664500041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6921828 + ... + 6921923.

Almost surely, 2^664500048 is an apocalyptic number.

It is an amenable number.

664500048 is an abundant number, since it is smaller than the sum of its proper divisors (1052125200).

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

664500048 is a wasteful number, since it uses less digits than its factorization.

664500048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13843762 (or 13843756 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 664500048 is about 25777.8984403306. The cubic root of 664500048 is about 872.6330798121.

The spelling of 664500048 in words is "six hundred sixty-four million, five hundred thousand, forty-eight".