664254748 has 12 divisors (see below), whose sum is σ = 1162697872. Its totient is φ = 332055360.

The previous prime is 664254737. The next prime is 664254749. The reversal of 664254748 is 847452466.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 664254698 and 664254707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664254749) 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, 6436 + ... + 37012.

Almost surely, 2^664254748 is an apocalyptic number.

It is an amenable number.

664254748 is a deficient number, since it is larger than the sum of its proper divisors (498443124).

664254748 is a wasteful number, since it uses less digits than its factorization.

664254748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36012 (or 36010 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 46.

The square root of 664254748 is about 25773.1400492839. The cubic root of 664254748 is about 872.5256891805.

The spelling of 664254748 in words is "six hundred sixty-four million, two hundred fifty-four thousand, seven hundred forty-eight".