664331010 has 128 divisors (see below), whose sum is σ = 1931489280. Its totient is φ = 142850304.

The previous prime is 664331009. The next prime is 664331047. The reversal of 664331010 is 10133466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 665832 + ... + 666828.

It is an arithmetic number, because the mean of its divisors is an integer number (15089760).

Almost surely, 2^664331010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664331010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965744640).

664331010 is an abundant number, since it is smaller than the sum of its proper divisors (1267158270).

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

664331010 is a wasteful number, since it uses less digits than its factorization.

664331010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 664331010 is about 25774.6194928267. The cubic root of 664331010 is about 872.5590789846.

Adding to 664331010 its reverse (10133466), we get a palindrome (674464476).

The spelling of 664331010 in words is "six hundred sixty-four million, three hundred thirty-one thousand, ten".