664251024 has 20 divisors (see below), whose sum is σ = 1715981936. Its totient is φ = 221416992.

The previous prime is 664251019. The next prime is 664251037. The reversal of 664251024 is 420152466.

664251024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 664250982 and 664251000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6919234 + ... + 6919329.

Almost surely, 2^664251024 is an apocalyptic number.

It is an amenable number.

664251024 is an abundant number, since it is smaller than the sum of its proper divisors (1051730912).

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

664251024 is a wasteful number, since it uses less digits than its factorization.

664251024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838574 (or 13838568 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 664251024 is about 25773.0678034261. The cubic root of 664251024 is about 872.5240586355.

The spelling of 664251024 in words is "six hundred sixty-four million, two hundred fifty-one thousand, twenty-four".